Difference between revisions of "Howto importing fluent mesh with internal walls"
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1) Change all the internal walls to type "internal" (it's just a marker to find the relevant cellset in OpenFoam). Take care that you don't combine internal and external walls in the same boundary. | 1) Change all the internal walls to type "internal" (it's just a marker to find the relevant cellset in OpenFoam). Take care that you don't combine internal and external walls in the same boundary. | ||
| − | 2) Save the mesh in Gambit with type "Fluent 5/6" as msh. | + | |
| − | 3) Use fluentMeshToFoam: | + | 2) Save the mesh in Gambit with type "Fluent 5/6" as .msh. |
| + | |||
| + | 3) Use [[fluentMeshToFoam]]: | ||
| + | |||
| + | fluentMeshToFoam <root> <caseName> <meshFile> | ||
| + | |||
| + | where <meshFile> is the name of the .msh file, including the full or relative path. | ||
| + | |||
| + | 4) Add for the internal wall a pair of patches in the <constant><polyMesh> section of your case: | ||
| + | |||
| + | wall_A | ||
| + | { | ||
| + | type wall; | ||
| + | physicalType <if required>; | ||
| + | startFace ; | ||
| + | nFaces 0; | ||
| + | } | ||
| + | |||
| + | wall_B | ||
| + | { | ||
| + | type wall; | ||
| + | physicalType <if required>; | ||
| + | startFace ; | ||
| + | nFaces 0; | ||
| + | } | ||
| + | |||
| + | 5) Apply the [[splitMesh]] command: | ||
| + | |||
| + | splitMesh <root> <caseName> <name_of_internal> <boundary_name_A> <boundary_name_B> | ||
| + | |||
| + | 6) Do a [[checkMesh]]: | ||
| + | |||
| + | checkMesh <root> <caseName> | ||
| + | |||
| + | You will end up the mesh check resulting in a lot of | ||
| + | |||
| + | checkCoords : points xxxxx and xxxxx with coordinates:(x y z) and (x1 y1 z1) ar | ||
| + | are relatively close to each other. This might be corret in case of e.g. baffles. | ||
| + | |||
| + | (That's what you asked for, isn't it?) | ||
| + | |||
| + | After that you can go on setting your boundaries using [[FoamX]] or command line interface and do your simulation. | ||
Revision as of 09:22, 28 January 2006
OpenFOAM does not know about internal walls, so if you have a doublesided wall (with cells on both sides) you have to work on the mesh before using fluentMeshToFoam:
1) Change all the internal walls to type "internal" (it's just a marker to find the relevant cellset in OpenFoam). Take care that you don't combine internal and external walls in the same boundary.
2) Save the mesh in Gambit with type "Fluent 5/6" as .msh.
3) Use fluentMeshToFoam:
fluentMeshToFoam <root> <caseName> <meshFile>
where <meshFile> is the name of the .msh file, including the full or relative path.
4) Add for the internal wall a pair of patches in the <constant><polyMesh> section of your case:
wall_A
{
type wall;
physicalType <if required>;
startFace ;
nFaces 0;
}
wall_B
{
type wall;
physicalType <if required>;
startFace ;
nFaces 0;
}
5) Apply the splitMesh command:
splitMesh <root> <caseName> <name_of_internal> <boundary_name_A> <boundary_name_B>
6) Do a checkMesh:
checkMesh <root> <caseName>
You will end up the mesh check resulting in a lot of
checkCoords : points xxxxx and xxxxx with coordinates:(x y z) and (x1 y1 z1) ar
are relatively close to each other. This might be corret in case of e.g. baffles.
(That's what you asked for, isn't it?)
After that you can go on setting your boundaries using FoamX or command line interface and do your simulation.
