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-   -   How to set a grid system of my own (http://www.cfd-online.com/Forums/openfoam-solving/60520-how-set-grid-system-my-own.html)

ztdep August 12, 2005 07:10

i have use the example grid fo
 
i have use the example grid for compuation.

but i want to compute a problem of my own,
need i to write the whole dictionaly by hand?

regards

hsieh August 12, 2005 11:07

HI, ztdep, You have to modi
 
HI, ztdep,

You have to modify blockMeshDict to build your gemoetry and mesh it. Or, you can use netgen to generate Tet mesh of your model (it reads stl/step/igs files).

pei

ztdep August 12, 2005 23:13

but i was a very complex gemoe
 
but i was a very complex gemoetry ,

it was a heat exchanger.

what should i do .

alberto August 12, 2005 23:25

Hello ztdep, you can generate
 
Hello ztdep,
you can generate the grid in a CAD/Mesh genearation tool. You can convert from the formats reported here: http://www.opencfd.co.uk/openfoam/do...l#x15-920003.6

Regards,
Alberto

ztdep August 15, 2005 00:54

i use the gridgen to generate
 
i use the gridgen to generate my grid system,

what should i do next step!

regards!

hsieh August 15, 2005 11:02

HI, ztdep, Save the mesh/BC
 
HI, ztdep,

Save the mesh/BCs to Fluent/CFX/Star-CD format. Then use OpenFOAM conversion utility (check user manual) to convert it to OpenFOAM format. then, you can run the solver.

pei

ztdep August 16, 2005 21:55

is it nessaray to save the BC
 
is it nessaray to save the BC for Fluent,

regards

alberto August 16, 2005 22:21

Yes, in GAMBIT, set the bounda
 
Yes, in GAMBIT, set the boundary conditions.
However, when imported in OpenFOAM, you'll have to set them again. The converter keeps the BC's names, but not their type.

Regards,
Alberto


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