source: anuga_work/development/convergence_okushiri_2008/run_okushiri_truescale.py @ 5396

"""Validation of the AnuGA implementation of the shallow water wave equation.

This script sets up a modified version of the Okushiri Island benchmark

as published at

THE THIRD INTERNATIONAL WORKSHOP ON LONG-WAVE RUNUP MODELS
June 17-18 2004
Wrigley Marine Science Center
Catalina Island, California
http://www.cee.cornell.edu/longwave/

This version up-scales the original 1:400 scale wave-tank experiment, to
"true-scale".

The original validation data was downloaded and made available in this directory
for convenience but the original data is available at
http://www.cee.cornell.edu/longwave/index.cfm?page=benchmark&problem=2
where a detailed description of the problem is also available.


Run create_okushiri_truescale.py to process the boundary condition and build a the
mesh before running this script.

"""

# Module imports
from anuga.shallow_water import Domain
from anuga.shallow_water import Reflective_boundary
from anuga.shallow_water import Transmissive_Momentum_Set_Stage_boundary
from anuga.abstract_2d_finite_volumes.util import file_function

import project_truescale


#-------------------------
# Create Domain from mesh
#-------------------------
domain = Domain(project_truescale.mesh_filename, use_cache=True, verbose=True)
print domain.statistics()

z = domain.get_vertex_coordinates()

# Write vertex coordinates to file
filename='okushiri_mesh_vertex_coordinates_truescale.txt'
fid=open(filename,'w')
fid.write('x (m), y (m)\n')
for i in range(len(z)):
    pt=z[i]
    x=pt[0]
    y=pt[1]
    fid.write('%.6f, %.6f\n' %(x, y))
        
#-------------------------
# Initial Conditions
#-------------------------
domain.set_quantity('friction', 0.0)
domain.set_quantity('stage', 0.0)
domain.set_quantity('elevation',
                    filename=project_truescale.bathymetry_filename,
                    alpha=0.02,                    
                    verbose=True,
                    use_cache=True)


#-------------------------
# Set simulation parameters
#-------------------------
domain.set_name(project_truescale.output_filename)  # Name of output sww file
domain.set_datadir(project_truescale.output_dir)
domain.set_default_order(2)               # Apply second order scheme 
domain.set_all_limiters(0.9)              # Max second order scheme (old lim)
domain.set_minimum_storable_height(0.4)   # Don't store h < 0.4m
domain.tight_slope_limiters = 1
domain.beta_h = 0.0

#Timings on AMD64-242 (beta_h=0)
#  tight_slope_limiters = 0:
#    3035s - 3110s
#  tight_slope_limiters = 1:
#    3000s - 3008s
#
# beta_h>0: In the order of 3200s

#-------------------------
# Boundary Conditions
#-------------------------

# Create boundary function from timeseries provided in file
function = file_function(project_truescale.boundary_filename,
                         domain, verbose=True)

# Create and assign boundary objects
Bts = Transmissive_Momentum_Set_Stage_boundary(domain, function)
Br = Reflective_boundary(domain)
domain.set_boundary({'wave': Bts, 'wall': Br})


# Select triangle containing ch5 for diagnostic output
# around known gauge
triangle_id = domain.get_triangle_containing_point([1808.4, 478.4])
# This should get triangle id 32833 with centroid (4.5244, 1.1972)


#-------------------------
# Evolve through time
#-------------------------
import time
t0 = time.time()

for t in domain.evolve(yieldstep = 1, finaltime = 450):
    print domain.timestepping_statistics(track_speeds=False,
                                         triangle_id=triangle_id)
    print domain.boundary_statistics()

print 'That took %.2f seconds' %(time.time()-t0)