source: inundation/wiki/issues.txt @ 2113

Last change on this file since 2113 was 1575, checked in by steve, 19 years ago

In the process of copying stage from full domain to sub domains

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1
2OPEN ISSUES:
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4
5
6Issue: Pmesh do not write in msh format
7Importance: Mid-High
8Action: See under pmesh/documentation
9
10Issue: geo_reference is not passed into domain and further on to sww file. Hence we can't export results properly to e.g GIS
11Importance: High
12Action: Make it happen!
13
14Issue: With reflective boundaries, and very small timesteps and very shallow
15stage, there seems to be a situation where we lose mass. Must investigate!
16Importance: Mid-High
17Action: Check out boundary condition
18
19
20
21CLOSED ISSUES:
22------------
23Issue: Segments in pmesh that are solely used to separate regions
24(e.g. for different resolution) will appear as an *internal*
25boundary in the resulting domain even though it may not have been intended to
26have a boundary condition applied.
27Background: Genuine internal boundaries are created the same way as
28external boundaries through the 'boundary' dictionary mapping triangle_id
29and edge number to a tag.
30When a mesh is created, this dictionary will override the neighbour structure
31and thereby enforce the internal boundary status.
32This is all very well for 'True' internal boundaries.
33However, once a segment belongs to a boundary (internal or external)
34it must be bound to a boundary condition object in order to supply
35values for the flux computations. Hence there is no way of allowing
36normal flow between neighbouring triangles in the case where they are
37separated by an (unintended) internal boundary.
38An older version of pyvolution allowed None as a boundary object which
39probably meant that a zero dirichlet condition was imposed.
40Not sure about this, though.
41Importance: High
42Action: Actually the older version of pyvolution allowed None to mean
43there are no boundaries.  This is a usefull feature.  So let's put it
44back.  Pmesh no longer defaults to "internal" for an untagged internal
45boundary.  It defaults to no tag.
46Status: resolved
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