Unresolved problem and Queries
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From other post on the forums (http://www.cfd-online.com/Forums/ope...rintstack.html) i came across checking the mesh by "checkMesh" i did that thing and found few things about my mesh bold ones. Code:
Overall number of cells of each type: |
Hi,
According to CFL condition, your dt should be less than 1.2e-14 sec, so you should make a coarser mesh. I am not an expert on openFoam but as much as I know if you don't overconstrain the B.Cs there should be no problem in the boundary conditions you defined. I ran your case and worked a little bit on it but no success was observed. I thought that the problem is probably for your Initial Pressure Condition in the domain and it will cause some math. error in the solution but there was no success. I think the first step to solve your problem is to obey the CFL condition(by decreasing dt or making a coarser mesh) and then investigate on the B.Cs. Regards. Ali |
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Thanks for Reply I also think that it necessary for defining an interior pressure conditions in side the box since i don't think wit the given velocity inlet the solver is developing the interior pressure field. but then if i specify some interior pressure inside the domain then it will start affecting my inlet boundary conditions hence i am totally in a mess how to make this problem as this is on of my projects in the university.And i will now try to coarse my mesh and then try to implement the boundary condition how it might work.if you find some ways than please do share. Regards Himanshu sharma |
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