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June 1, 2017, 09:22
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fleunt, solution
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#1 |
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Member
hgggfh
Join Date: Jan 2017
Posts: 30
Rep Power: 9  |
01-Jun-17 5-44-43 PM.jpg
can any one help me why the solution is in this way ???? i mesh it by icem im using k opselum turbulence model with v = 51 m/s courant number is 0.5 |
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June 1, 2017, 09:26
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#2 |
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Senior Member
Kal-El
Join Date: Apr 2017
Location: Finland
Posts: 150
Rep Power: 9 |
We need more information
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June 1, 2017, 09:58
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#3 |
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Member
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Need to see the residuals, soon you gonna get divergence, the turbulent viscosity is too high. The case is unstable with respect to BC's.
But the main question, what are you trying to simulate, what's the problem statement? Sent from my iPhone using CFD Online Forum mobile app |
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June 1, 2017, 14:50
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#4 |
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Member
hgggfh
Join Date: Jan 2017
Posts: 30
Rep Power: 9 |
im trying to simulate an airfoil,
this is my residual 01-Jun-17 11-15-08 PM.jpg and this is my file do u need any thing else ? |
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June 1, 2017, 15:09
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#5 |
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Senior Member
Join Date: Dec 2016
Posts: 152
Rep Power: 10 |
Might be helpful to post your boundary conditions. They are probably right, but more info is always better.
Sent from my iPhone using CFD Online Forum mobile app |
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June 1, 2017, 15:33
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#6 |
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Member
hgggfh
Join Date: Jan 2017
Posts: 30
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June 1, 2017, 16:03
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#7 |
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Senior Member
Join Date: Dec 2016
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June 1, 2017, 16:33
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#8 |
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Member
hgggfh
Join Date: Jan 2017
Posts: 30
Rep Power: 9 |
yes there is no outlet
but i specify the direction of my velocity as i know in CFX there is no need to specify outlet if you specify the velocity direction |
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June 1, 2017, 17:10
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#9 |
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Senior Member
Join Date: Dec 2016
Posts: 152
Rep Power: 10 |
Okay, to my knowledge you do need an outlet. Check out this post Does Fluent always need inlet and outlet ? for more info.
There might be some applications of the software that would benefit from not having an outlet, but unless you absolutely can't have one it's always a good idea to add one. |
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June 1, 2017, 17:21
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#10 |
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Member
hgggfh
Join Date: Jan 2017
Posts: 30
Rep Power: 9 |
yeah you are true
thanks alot it works well |
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