[6038] | 1 | #include "Python.h" |
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| 2 | #include "Numeric/arrayobject.h" |
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| 3 | #include "math.h" |
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| 4 | #include <stdio.h> |
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| 5 | const double pi = 3.14159265358979; |
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| 6 | |
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| 7 | |
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| 8 | // Shared code snippets |
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| 9 | #include "util_ext.h" |
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| 10 | |
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| 11 | |
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| 12 | /* double max(double a, double b) { */ |
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| 13 | /* double z; */ |
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| 14 | /* z=(a>b)?a:b; */ |
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| 15 | /* return z;} */ |
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| 16 | |
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| 17 | /* double min(double a, double b) { */ |
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| 18 | /* double z; */ |
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| 19 | /* z=(a<b)?a:b; */ |
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| 20 | /* return z;} */ |
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| 21 | |
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| 22 | |
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| 23 | // Function to obtain speed from momentum and depth. |
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| 24 | // This is used by flux functions |
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| 25 | // Input parameters uh and h may be modified by this function. |
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| 26 | double _compute_speed(double *uh, |
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| 27 | double *h, |
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| 28 | double epsilon, |
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| 29 | double h0) { |
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| 30 | |
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| 31 | double u; |
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| 32 | |
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| 33 | if (*h < epsilon) { |
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| 34 | *h = 0.0; //Could have been negative |
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| 35 | u = 0.0; |
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| 36 | } else { |
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| 37 | u = *uh/(*h + h0/ *h); |
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| 38 | } |
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| 39 | |
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| 40 | |
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| 41 | // Adjust momentum to be consistent with speed |
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| 42 | *uh = u * *h; |
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| 43 | |
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| 44 | return u; |
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| 45 | } |
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| 46 | |
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| 47 | //------------------------------------------------------------- |
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| 48 | // New vel based code |
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| 49 | //------------------------------------------------------------- |
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| 50 | //Innermost flux function (using w=z+h) |
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| 51 | int _flux_function_vel(double *q_left, double *q_right, |
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| 52 | double normals, double g, double epsilon, double h0, |
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| 53 | double *edgeflux, double *max_speed) { |
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| 54 | |
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| 55 | int i; |
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| 56 | double flux_left[2], flux_right[2]; |
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| 57 | double w_left, h_left, uh_left, z_left, u_left, soundspeed_left; |
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| 58 | double w_right, h_right, uh_right, z_right, u_right, soundspeed_right; |
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| 59 | double z, s_max, s_min, denom; |
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| 60 | |
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| 61 | |
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| 62 | w_left = q_left[0]; |
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| 63 | uh_left = q_left[1]*normals; |
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| 64 | z_left = q_left[2]; |
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| 65 | h_left = q_left[3]; |
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| 66 | u_left = q_left[4]*normals; |
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| 67 | |
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| 68 | /* printf("w_left = %f \n",w_left); */ |
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| 69 | /* printf("uh_left = %f \n",uh_left); */ |
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| 70 | /* printf("z_left = %f \n",z_left); */ |
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| 71 | /* printf("h_left = %f \n",h_left); */ |
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| 72 | /* printf("u_left = %f \n",u_left); */ |
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| 73 | |
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| 74 | w_right = q_right[0]; |
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| 75 | uh_right = q_right[1]*normals; |
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| 76 | z_right = q_right[2]; |
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| 77 | h_right = q_right[3]; |
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| 78 | u_right = q_right[4]*normals; |
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| 79 | |
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| 80 | z = (z_left+z_right)/2.0; |
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| 81 | |
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| 82 | soundspeed_left = sqrt(g*h_left); |
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| 83 | soundspeed_right = sqrt(g*h_right); |
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| 84 | |
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| 85 | s_max = max(u_left+soundspeed_left, u_right+soundspeed_right); |
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| 86 | if (s_max < 0.0) s_max = 0.0; |
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| 87 | |
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| 88 | s_min = min(u_left-soundspeed_left, u_right-soundspeed_right); |
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| 89 | if (s_min > 0.0) s_min = 0.0; |
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| 90 | |
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| 91 | |
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| 92 | // Flux formulas |
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| 93 | flux_left[0] = u_left*h_left; |
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| 94 | flux_left[1] = u_left*u_left*h_left + 0.5*g*h_left*h_left; |
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| 95 | |
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| 96 | flux_right[0] = u_right*h_right; |
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| 97 | flux_right[1] = u_right*u_right*h_right + 0.5*g*h_right*h_right; |
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| 98 | |
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| 99 | // Flux computation |
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| 100 | denom = s_max-s_min; |
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| 101 | if (denom < epsilon) { |
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| 102 | for (i=0; i<2; i++) edgeflux[i] = 0.0; |
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| 103 | *max_speed = 0.0; |
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| 104 | } else { |
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| 105 | edgeflux[0] = s_max*flux_left[0] - s_min*flux_right[0]; |
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| 106 | edgeflux[0] += s_max*s_min*(w_right-w_left); |
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| 107 | edgeflux[0] /= denom; |
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| 108 | edgeflux[1] = s_max*flux_left[1] - s_min*flux_right[1]; |
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| 109 | edgeflux[1] += s_max*s_min*(uh_right-uh_left); |
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| 110 | edgeflux[1] /= denom; |
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| 111 | edgeflux[1] *= normals; |
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| 112 | |
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| 113 | // Maximal wavespeed |
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| 114 | *max_speed = max(fabs(s_max), fabs(s_min)); |
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| 115 | } |
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| 116 | return 0; |
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| 117 | } |
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| 118 | |
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| 119 | // Computational function for flux computation |
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| 120 | double _compute_fluxes_vel_ext(double cfl, |
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| 121 | double timestep, |
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| 122 | double epsilon, |
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| 123 | double g, |
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| 124 | double h0, |
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| 125 | long* neighbours, |
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| 126 | long* neighbour_vertices, |
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| 127 | double* normals, |
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| 128 | double* areas, |
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| 129 | double* stage_edge_values, |
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| 130 | double* xmom_edge_values, |
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| 131 | double* bed_edge_values, |
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| 132 | double* height_edge_values, |
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| 133 | double* velocity_edge_values, |
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| 134 | double* stage_boundary_values, |
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| 135 | double* xmom_boundary_values, |
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| 136 | double* bed_boundary_values, |
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| 137 | double* height_boundary_values, |
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| 138 | double* velocity_boundary_values, |
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| 139 | double* stage_explicit_update, |
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| 140 | double* xmom_explicit_update, |
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| 141 | int number_of_elements, |
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| 142 | double* max_speed_array) { |
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| 143 | |
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| 144 | double flux[2], ql[5], qr[5], edgeflux[2]; |
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| 145 | double max_speed, normal; |
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| 146 | int k, i, ki, n, m, nm=0; |
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| 147 | |
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| 148 | |
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| 149 | for (k=0; k<number_of_elements; k++) { |
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| 150 | flux[0] = 0.0; |
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| 151 | flux[1] = 0.0; |
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| 152 | |
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| 153 | for (i=0; i<2; i++) { |
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| 154 | ki = k*2+i; |
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| 155 | |
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| 156 | ql[0] = stage_edge_values[ki]; |
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| 157 | ql[1] = xmom_edge_values[ki]; |
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| 158 | ql[2] = bed_edge_values[ki]; |
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| 159 | ql[3] = height_edge_values[ki]; |
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| 160 | ql[4] = velocity_edge_values[ki]; |
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| 161 | |
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| 162 | n = neighbours[ki]; |
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| 163 | if (n<0) { |
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| 164 | m = -n-1; |
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| 165 | qr[0] = stage_boundary_values[m]; |
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| 166 | qr[1] = xmom_boundary_values[m]; |
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| 167 | qr[2] = bed_boundary_values[m]; |
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| 168 | qr[3] = height_boundary_values[m]; |
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| 169 | qr[4] = velocity_boundary_values[m]; |
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| 170 | } else { |
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| 171 | m = neighbour_vertices[ki]; |
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| 172 | nm = n*2+m; |
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| 173 | qr[0] = stage_edge_values[nm]; |
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| 174 | qr[1] = xmom_edge_values[nm]; |
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| 175 | qr[2] = bed_edge_values[nm]; |
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| 176 | qr[3] = height_edge_values[nm]; |
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| 177 | qr[4] = velocity_edge_values[nm]; |
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| 178 | } |
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| 179 | |
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| 180 | normal = normals[ki]; |
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| 181 | _flux_function_vel(ql, qr, normal, g, epsilon, h0, edgeflux, &max_speed); |
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| 182 | flux[0] -= edgeflux[0]; |
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| 183 | flux[1] -= edgeflux[1]; |
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| 184 | |
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| 185 | // Update timestep based on edge i and possibly neighbour n |
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| 186 | if (max_speed > epsilon) { |
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| 187 | // Original CFL calculation |
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| 188 | |
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| 189 | timestep = min(timestep, 0.5*cfl*areas[k]/max_speed); |
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| 190 | if (n>=0) { |
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| 191 | timestep = min(timestep, 0.5*cfl*areas[n]/max_speed); |
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| 192 | } |
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| 193 | } |
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| 194 | } // End edge i (and neighbour n) |
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| 195 | flux[0] /= areas[k]; |
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| 196 | stage_explicit_update[k] = flux[0]; |
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| 197 | flux[1] /= areas[k]; |
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| 198 | xmom_explicit_update[k] = flux[1]; |
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| 199 | |
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| 200 | //Keep track of maximal speeds |
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| 201 | max_speed_array[k]=max_speed; |
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| 202 | } |
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| 203 | return timestep; |
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| 204 | } |
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| 205 | |
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| 206 | //------------------------------------------------------------- |
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| 207 | // Old code |
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| 208 | //------------------------------------------------------------ |
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| 209 | //Innermost flux function (using w=z+h) |
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| 210 | int _flux_function(double *q_left, double *q_right, |
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| 211 | double z_left, double z_right, |
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| 212 | double normals, double g, double epsilon, double h0, |
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| 213 | double *edgeflux, double *max_speed) { |
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| 214 | |
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| 215 | int i; |
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| 216 | double ql[2], qr[2], flux_left[2], flux_right[2]; |
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| 217 | double z, w_left, h_left, uh_left, soundspeed_left, u_left; |
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| 218 | double w_right, h_right, uh_right, soundspeed_right, u_right; |
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| 219 | double s_max, s_min, denom; |
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| 220 | |
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| 221 | //printf("h0 = %f \n",h0); |
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| 222 | ql[0] = q_left[0]; |
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| 223 | ql[1] = q_left[1]; |
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| 224 | ql[1] = ql[1]*normals; |
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| 225 | |
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| 226 | qr[0] = q_right[0]; |
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| 227 | qr[1] = q_right[1]; |
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| 228 | qr[1] = qr[1]*normals; |
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| 229 | |
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| 230 | z = (z_left+z_right)/2.0; |
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| 231 | |
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| 232 | //w_left = ql[0]; |
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| 233 | //h_left = w_left-z; |
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| 234 | //uh_left = ql[1]; |
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| 235 | |
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| 236 | |
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| 237 | |
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| 238 | // Compute speeds in x-direction |
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| 239 | w_left = ql[0]; |
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| 240 | h_left = w_left-z; |
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| 241 | uh_left = ql[1]; |
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| 242 | |
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| 243 | u_left = _compute_speed(&uh_left, &h_left, epsilon, h0); |
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| 244 | |
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| 245 | w_right = qr[0]; |
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| 246 | h_right = w_right-z; |
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| 247 | uh_right = qr[1]; |
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| 248 | |
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| 249 | u_right = _compute_speed(&uh_right, &h_right, epsilon, h0); |
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| 250 | |
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| 251 | soundspeed_left = sqrt(g*h_left); |
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| 252 | soundspeed_right = sqrt(g*h_right); |
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| 253 | |
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| 254 | s_max = max(u_left+soundspeed_left, u_right+soundspeed_right); |
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| 255 | if (s_max < 0.0) s_max = 0.0; |
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| 256 | |
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| 257 | s_min = min(u_left-soundspeed_left, u_right-soundspeed_right); |
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| 258 | if (s_min > 0.0) s_min = 0.0; |
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| 259 | |
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| 260 | |
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| 261 | // Flux formulas |
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| 262 | flux_left[0] = u_left*h_left; |
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| 263 | flux_left[1] = u_left*uh_left + 0.5*g*h_left*h_left; |
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| 264 | |
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| 265 | flux_right[0] = u_right*h_right; |
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| 266 | flux_right[1] = u_right*uh_right + 0.5*g*h_right*h_right; |
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| 267 | |
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| 268 | // Flux computation |
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| 269 | denom = s_max-s_min; |
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| 270 | if (denom < epsilon) { |
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| 271 | for (i=0; i<2; i++) edgeflux[i] = 0.0; |
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| 272 | *max_speed = 0.0; |
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| 273 | } else { |
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| 274 | edgeflux[0] = s_max*flux_left[0] - s_min*flux_right[0]; |
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| 275 | edgeflux[0] += s_max*s_min*(qr[0]-ql[0]); |
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| 276 | edgeflux[0] /= denom; |
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| 277 | edgeflux[1] = s_max*flux_left[1] - s_min*flux_right[1]; |
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| 278 | edgeflux[1] += s_max*s_min*(qr[1]-ql[1]); |
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| 279 | edgeflux[1] /= denom; |
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| 280 | edgeflux[1] *= normals; |
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| 281 | |
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| 282 | // Maximal wavespeed |
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| 283 | *max_speed = max(fabs(s_max), fabs(s_min)); |
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| 284 | } |
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| 285 | return 0; |
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| 286 | } |
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| 287 | |
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| 288 | |
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| 289 | |
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| 290 | |
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| 291 | // Computational function for flux computation |
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| 292 | double _compute_fluxes_ext( |
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| 293 | double cfl, |
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| 294 | double timestep, |
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| 295 | double epsilon, |
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| 296 | double g, |
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| 297 | double h0, |
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| 298 | long* neighbours, |
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| 299 | long* neighbour_vertices, |
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| 300 | double* normals, |
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| 301 | double* areas, |
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| 302 | double* stage_edge_values, |
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| 303 | double* xmom_edge_values, |
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| 304 | double* bed_edge_values, |
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| 305 | double* stage_boundary_values, |
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| 306 | double* xmom_boundary_values, |
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| 307 | double* stage_explicit_update, |
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| 308 | double* xmom_explicit_update, |
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| 309 | int number_of_elements, |
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| 310 | double* max_speed_array) { |
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| 311 | |
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| 312 | double flux[2], ql[2], qr[2], edgeflux[2]; |
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| 313 | double zl, zr, max_speed, normal; |
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| 314 | int k, i, ki, n, m, nm=0; |
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| 315 | |
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| 316 | |
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| 317 | for (k=0; k<number_of_elements; k++) { |
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| 318 | flux[0] = 0.0; |
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| 319 | flux[1] = 0.0; |
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| 320 | |
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| 321 | for (i=0; i<2; i++) { |
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| 322 | ki = k*2+i; |
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| 323 | |
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| 324 | ql[0] = stage_edge_values[ki]; |
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| 325 | ql[1] = xmom_edge_values[ki]; |
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| 326 | zl = bed_edge_values[ki]; |
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| 327 | |
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| 328 | n = neighbours[ki]; |
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| 329 | if (n<0) { |
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| 330 | m = -n-1; |
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| 331 | qr[0] = stage_boundary_values[m]; |
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| 332 | qr[1] = xmom_boundary_values[m]; |
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| 333 | zr = zl; |
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| 334 | } else { |
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| 335 | m = neighbour_vertices[ki]; |
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| 336 | nm = n*2+m; |
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| 337 | qr[0] = stage_edge_values[nm]; |
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| 338 | qr[1] = xmom_edge_values[nm]; |
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| 339 | zr = bed_edge_values[nm]; |
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| 340 | } |
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| 341 | |
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| 342 | normal = normals[ki]; |
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| 343 | _flux_function(ql, qr, zl, zr, normal, g, epsilon, h0, edgeflux, &max_speed); |
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| 344 | flux[0] -= edgeflux[0]; |
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| 345 | flux[1] -= edgeflux[1]; |
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| 346 | |
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| 347 | // Update timestep based on edge i and possibly neighbour n |
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| 348 | if (max_speed > epsilon) { |
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| 349 | // Original CFL calculation |
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| 350 | |
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| 351 | timestep = min(timestep, 0.5*cfl*areas[k]/max_speed); |
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| 352 | if (n>=0) { |
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| 353 | timestep = min(timestep, 0.5*cfl*areas[n]/max_speed); |
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| 354 | } |
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| 355 | } |
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| 356 | } // End edge i (and neighbour n) |
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| 357 | flux[0] /= areas[k]; |
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| 358 | stage_explicit_update[k] = flux[0]; |
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| 359 | flux[1] /= areas[k]; |
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| 360 | xmom_explicit_update[k] = flux[1]; |
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| 361 | |
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| 362 | //Keep track of maximal speeds |
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| 363 | max_speed_array[k]=max_speed; |
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| 364 | } |
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| 365 | return timestep; |
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| 366 | } |
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| 367 | |
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| 368 | //========================================================================= |
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| 369 | // Python Glue |
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| 370 | //========================================================================= |
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| 371 | PyObject *compute_fluxes_ext(PyObject *self, PyObject *args) { |
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| 372 | |
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| 373 | PyObject |
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| 374 | *domain, |
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| 375 | *stage, |
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| 376 | *xmom, |
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| 377 | *bed; |
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| 378 | |
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| 379 | PyArrayObject |
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| 380 | *neighbours, |
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| 381 | *neighbour_vertices, |
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| 382 | *normals, |
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| 383 | *areas, |
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| 384 | *stage_vertex_values, |
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| 385 | *xmom_vertex_values, |
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| 386 | *bed_vertex_values, |
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| 387 | *stage_boundary_values, |
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| 388 | *xmom_boundary_values, |
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| 389 | *stage_explicit_update, |
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| 390 | *xmom_explicit_update, |
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| 391 | *max_speed_array; |
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| 392 | |
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| 393 | double timestep, epsilon, g, h0, cfl; |
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| 394 | int number_of_elements; |
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| 395 | |
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| 396 | |
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| 397 | // Convert Python arguments to C |
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| 398 | if (!PyArg_ParseTuple(args, "dOOOO", |
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| 399 | ×tep, |
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| 400 | &domain, |
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| 401 | &stage, |
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| 402 | &xmom, |
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| 403 | &bed)) { |
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| 404 | PyErr_SetString(PyExc_RuntimeError, "comp_flux_vel_ext.c: compute_fluxes_ext could not parse input"); |
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| 405 | return NULL; |
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| 406 | } |
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| 407 | |
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| 408 | |
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| 409 | epsilon = get_python_double(domain,"epsilon"); |
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| 410 | g = get_python_double(domain,"g"); |
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| 411 | h0 = get_python_double(domain,"h0"); |
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| 412 | cfl = get_python_double(domain,"CFL"); |
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| 413 | |
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| 414 | |
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| 415 | neighbours = get_consecutive_array(domain, "neighbours"); |
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| 416 | neighbour_vertices= get_consecutive_array(domain, "neighbour_vertices"); |
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| 417 | normals = get_consecutive_array(domain, "normals"); |
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| 418 | areas = get_consecutive_array(domain, "areas"); |
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| 419 | max_speed_array = get_consecutive_array(domain, "max_speed_array"); |
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| 420 | |
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| 421 | stage_vertex_values = get_consecutive_array(stage, "vertex_values"); |
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| 422 | xmom_vertex_values = get_consecutive_array(xmom, "vertex_values"); |
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| 423 | bed_vertex_values = get_consecutive_array(bed, "vertex_values"); |
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| 424 | |
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| 425 | stage_boundary_values = get_consecutive_array(stage, "boundary_values"); |
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| 426 | xmom_boundary_values = get_consecutive_array(xmom, "boundary_values"); |
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| 427 | |
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| 428 | |
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| 429 | stage_explicit_update = get_consecutive_array(stage, "explicit_update"); |
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| 430 | xmom_explicit_update = get_consecutive_array(xmom, "explicit_update"); |
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| 431 | |
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| 432 | |
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| 433 | |
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| 434 | number_of_elements = stage_vertex_values -> dimensions[0]; |
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| 435 | |
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| 436 | |
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| 437 | |
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| 438 | // Call underlying flux computation routine and update |
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| 439 | // the explicit update arrays |
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| 440 | timestep = _compute_fluxes_ext( |
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| 441 | cfl, |
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| 442 | timestep, |
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| 443 | epsilon, |
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| 444 | g, |
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| 445 | h0, |
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| 446 | (long*) neighbours -> data, |
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| 447 | (long*) neighbour_vertices -> data, |
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| 448 | (double*) normals -> data, |
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| 449 | (double*) areas -> data, |
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| 450 | (double*) stage_vertex_values -> data, |
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| 451 | (double*) xmom_vertex_values -> data, |
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| 452 | (double*) bed_vertex_values -> data, |
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| 453 | (double*) stage_boundary_values -> data, |
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| 454 | (double*) xmom_boundary_values -> data, |
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| 455 | (double*) stage_explicit_update -> data, |
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| 456 | (double*) xmom_explicit_update -> data, |
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| 457 | number_of_elements, |
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| 458 | (double*) max_speed_array -> data); |
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| 459 | |
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| 460 | |
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| 461 | Py_DECREF(neighbours); |
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| 462 | Py_DECREF(neighbour_vertices); |
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| 463 | Py_DECREF(normals); |
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| 464 | Py_DECREF(areas); |
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| 465 | Py_DECREF(stage_vertex_values); |
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| 466 | Py_DECREF(xmom_vertex_values); |
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| 467 | Py_DECREF(bed_vertex_values); |
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| 468 | Py_DECREF(stage_boundary_values); |
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| 469 | Py_DECREF(xmom_boundary_values); |
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| 470 | Py_DECREF(stage_explicit_update); |
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| 471 | Py_DECREF(xmom_explicit_update); |
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| 472 | Py_DECREF(max_speed_array); |
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| 473 | |
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| 474 | |
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| 475 | |
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| 476 | |
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| 477 | // Return updated flux timestep |
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| 478 | return Py_BuildValue("d", timestep); |
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| 479 | } |
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| 480 | |
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| 481 | |
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| 482 | //------------------------------------------------ |
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| 483 | // New velocity based compute fluxes |
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| 484 | //------------------------------------------------ |
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| 485 | PyObject *compute_fluxes_vel_ext(PyObject *self, PyObject *args) { |
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| 486 | |
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| 487 | PyObject |
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| 488 | *domain, |
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| 489 | *stage, |
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| 490 | *xmom, |
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| 491 | *bed, |
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| 492 | *height, |
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| 493 | *velocity; |
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| 494 | |
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| 495 | PyArrayObject |
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| 496 | *neighbours, |
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| 497 | *neighbour_vertices, |
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| 498 | *normals, |
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| 499 | *areas, |
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| 500 | *stage_vertex_values, |
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| 501 | *xmom_vertex_values, |
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| 502 | *bed_vertex_values, |
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| 503 | *height_vertex_values, |
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| 504 | *velocity_vertex_values, |
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| 505 | *stage_boundary_values, |
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| 506 | *xmom_boundary_values, |
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| 507 | *bed_boundary_values, |
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| 508 | *height_boundary_values, |
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| 509 | *velocity_boundary_values, |
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| 510 | *stage_explicit_update, |
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| 511 | *xmom_explicit_update, |
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| 512 | *max_speed_array; |
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| 513 | |
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| 514 | double timestep, epsilon, g, h0, cfl; |
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| 515 | int number_of_elements; |
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| 516 | |
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| 517 | |
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| 518 | // Convert Python arguments to C |
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| 519 | if (!PyArg_ParseTuple(args, "dOOOOOO", |
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| 520 | ×tep, |
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| 521 | &domain, |
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| 522 | &stage, |
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| 523 | &xmom, |
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| 524 | &bed, |
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| 525 | &height, |
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| 526 | &velocity)) { |
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| 527 | PyErr_SetString(PyExc_RuntimeError, "comp_flux_vel_ext.c: compute_fluxes_vel_ext could not parse input"); |
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| 528 | return NULL; |
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| 529 | } |
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| 530 | |
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| 531 | |
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| 532 | epsilon = get_python_double(domain,"epsilon"); |
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| 533 | g = get_python_double(domain,"g"); |
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| 534 | h0 = get_python_double(domain,"h0"); |
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| 535 | cfl = get_python_double(domain,"CFL"); |
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| 536 | |
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| 537 | |
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| 538 | neighbours = get_consecutive_array(domain, "neighbours"); |
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| 539 | neighbour_vertices= get_consecutive_array(domain, "neighbour_vertices"); |
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| 540 | normals = get_consecutive_array(domain, "normals"); |
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| 541 | areas = get_consecutive_array(domain, "areas"); |
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| 542 | max_speed_array = get_consecutive_array(domain, "max_speed_array"); |
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| 543 | |
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| 544 | stage_vertex_values = get_consecutive_array(stage, "vertex_values"); |
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| 545 | xmom_vertex_values = get_consecutive_array(xmom, "vertex_values"); |
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| 546 | bed_vertex_values = get_consecutive_array(bed, "vertex_values"); |
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| 547 | height_vertex_values = get_consecutive_array(height, "vertex_values"); |
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| 548 | velocity_vertex_values = get_consecutive_array(velocity, "vertex_values"); |
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| 549 | |
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| 550 | stage_boundary_values = get_consecutive_array(stage, "boundary_values"); |
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| 551 | xmom_boundary_values = get_consecutive_array(xmom, "boundary_values"); |
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| 552 | bed_boundary_values = get_consecutive_array(bed, "boundary_values"); |
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| 553 | height_boundary_values = get_consecutive_array(height, "boundary_values"); |
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| 554 | velocity_boundary_values = get_consecutive_array(velocity, "boundary_values"); |
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| 555 | |
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| 556 | |
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| 557 | stage_explicit_update = get_consecutive_array(stage, "explicit_update"); |
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| 558 | xmom_explicit_update = get_consecutive_array(xmom, "explicit_update"); |
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| 559 | |
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| 560 | number_of_elements = stage_vertex_values -> dimensions[0]; |
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| 561 | |
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| 562 | // Call underlying flux computation routine and update |
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| 563 | // the explicit update arrays |
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| 564 | timestep = _compute_fluxes_vel_ext(cfl, |
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| 565 | timestep, |
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| 566 | epsilon, |
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| 567 | g, |
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| 568 | h0, |
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| 569 | (long*) neighbours -> data, |
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| 570 | (long*) neighbour_vertices -> data, |
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| 571 | (double*) normals -> data, |
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| 572 | (double*) areas -> data, |
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| 573 | (double*) stage_vertex_values -> data, |
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| 574 | (double*) xmom_vertex_values -> data, |
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| 575 | (double*) bed_vertex_values -> data, |
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| 576 | (double*) height_vertex_values -> data, |
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| 577 | (double*) velocity_vertex_values -> data, |
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| 578 | (double*) stage_boundary_values -> data, |
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| 579 | (double*) xmom_boundary_values -> data, |
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| 580 | (double*) bed_boundary_values -> data, |
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| 581 | (double*) height_boundary_values -> data, |
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| 582 | (double*) velocity_boundary_values -> data, |
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| 583 | (double*) stage_explicit_update -> data, |
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| 584 | (double*) xmom_explicit_update -> data, |
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| 585 | number_of_elements, |
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| 586 | (double*) max_speed_array -> data); |
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| 587 | |
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| 588 | |
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| 589 | Py_DECREF(neighbours); |
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| 590 | Py_DECREF(neighbour_vertices); |
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| 591 | Py_DECREF(normals); |
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| 592 | Py_DECREF(areas); |
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| 593 | Py_DECREF(stage_vertex_values); |
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| 594 | Py_DECREF(xmom_vertex_values); |
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| 595 | Py_DECREF(bed_vertex_values); |
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| 596 | Py_DECREF(height_vertex_values); |
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| 597 | Py_DECREF(velocity_vertex_values); |
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| 598 | Py_DECREF(stage_boundary_values); |
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| 599 | Py_DECREF(xmom_boundary_values); |
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| 600 | Py_DECREF(bed_boundary_values); |
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| 601 | Py_DECREF(height_boundary_values); |
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| 602 | Py_DECREF(velocity_boundary_values); |
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| 603 | Py_DECREF(stage_explicit_update); |
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| 604 | Py_DECREF(xmom_explicit_update); |
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| 605 | Py_DECREF(max_speed_array); |
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| 606 | |
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| 607 | |
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| 608 | // Return updated flux timestep |
---|
| 609 | return Py_BuildValue("d", timestep); |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | |
---|
| 613 | |
---|
| 614 | //------------------------------- |
---|
| 615 | // Method table for python module |
---|
| 616 | //------------------------------- |
---|
| 617 | |
---|
| 618 | static struct PyMethodDef MethodTable[] = { |
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| 619 | {"compute_fluxes_ext", compute_fluxes_ext, METH_VARARGS, "Print out"}, |
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| 620 | {"compute_fluxes_vel_ext", compute_fluxes_vel_ext, METH_VARARGS, "Print out"}, |
---|
| 621 | {NULL, NULL} |
---|
| 622 | }; |
---|
| 623 | |
---|
| 624 | // Module initialisation |
---|
| 625 | void initcomp_flux_vel_ext(void){ |
---|
| 626 | Py_InitModule("comp_flux_vel_ext", MethodTable); |
---|
| 627 | import_array(); |
---|
| 628 | } |
---|