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nkme2007 November 9, 2012 08:07

Meshing problem in GAMBIT
 
3 Attachment(s)
I am planning to simulate the heat transfer from water passing through pipes inserted in ceiling of a building. But, while meshing the faces on GAMBIT, some faces are not getting meshed. Can anybody help me with some advice about how to mesh the model attached below? The unmeshed faces are in red.

Please... Help awaited.

Far November 9, 2012 08:21

is it closed volume?

nkme2007 November 9, 2012 08:40

Quote:

Originally Posted by Far (Post 391240)
is it closed volume?

No, it is not a closed volume.. walls and ceiling on their top with water pipes.

Marion November 9, 2012 08:54

Hi,

I think your mesh is way too coarse... You should also try to split your volume into smaller, simpler volumes.
Marion.

nkme2007 November 9, 2012 11:08

Quote:

Originally Posted by Marion (Post 391250)
Hi,

I think your mesh is way too coarse... You should also try to split your volume into smaller, simpler volumes.
Marion.

Marion,

Sorry to ask you again. Can you elaborate since I am new to CFD and this is my first model I am working on?

Far November 10, 2012 00:07

can you show us the control volume for this case?

You can edit above pics and roughly draw the control volume in red color around this room.

nkme2007 November 10, 2012 00:31

1 Attachment(s)
Quote:

Originally Posted by Far (Post 391353)
can you show us the control volume for this case?

You can edit above pics and roughly draw the control volume in red color around this room.

Sir,

The Contol Volume is shown in the image attached below. Inside volume of the room 3m X 3m X 3m is in white with 2 windows and 1 door in pink.

-Nithin

Far November 10, 2012 00:50

so the white shows the overall domain. With 3*3*3 volume and 1 door and 2 windows. Will you specify the boundary conditions for each wall, ceiling, each window and door seperatly?

nkme2007 November 10, 2012 00:57

Quote:

Originally Posted by Far (Post 391356)
so the white shows the overall domain. With 3*3*3 volume and 1 door and 2 windows. Will you specify the boundary conditions for each wall, ceiling, each window and door seperatly?

All the Walls will have same boundary conditions..
All the windows and doors have same..
Ceiling will have conditions different from walls and windows...
And Pipes visible on the ceiling are of fibre, that will be first effected due to water temperature, then ceiling and then the walls....


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