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Search took 0.00 seconds. Search: Posts Made By: niaz
Forum: OpenFOAM July 30, 2012, 04:26
Replies: 16
Views: 3,025
Posted By niaz
dear ank firstly, you have a problem in...

dear ank
firstly, you have a problem in convergency of your problem.
it can affect the solution.
Forum: OpenFOAM July 28, 2012, 14:33
Replies: 16
Views: 3,025
Posted By niaz
Dear Ank are you check that your case is not...

Dear Ank
are you check that your case is not turbulent?
Forum: OpenFOAM July 27, 2012, 09:46
Replies: 16
Views: 3,025
Posted By niaz
Dear Ank at first, change your pressure BC. it...

Dear Ank
at first, change your pressure BC. it is not correct to use uniform 0 for inlet and outlet. this BC means that no flow can in or out and it forces to circulate in the tube.
secondly, I...
Forum: OpenFOAM July 27, 2012, 04:36
Replies: 16
Views: 3,025
Posted By niaz
add these lines to your controldict ...

add these lines to your controldict
adjustTimeStep yes;

maxCo 0.2;
you may use a big times step. it helps to control courant number. and tiemstep.
try and tell me what is the result.
Forum: OpenFOAM July 27, 2012, 03:00
Replies: 16
Views: 3,025
Posted By niaz
Dear Ank 1- zeroGradient affects the solution...

Dear Ank
1- zeroGradient affects the solution of test cases. is your top and bottom limited?
I mean " can you increase the length of the main cylinder?"
2- change one of your pressure to...
Forum: OpenFOAM July 26, 2012, 16:21
Replies: 16
Views: 3,025
Posted By niaz
you trap pressure in your field so it is normal...

you trap pressure in your field so it is normal to diverge.
and zero gradient for both side is not good idea.
can you show your test case clearly?
Showing results 1 to 6 of 6

 
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