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November 29, 2005, 19:15 |
I have some problem about Compressible
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#1 |
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I doo my research about jet flow that have velocity inlet about 300 m/s and temp inlet about 900 Kelvin. My model is still on 2D. I set the top edge to be wall and outlet to be pressure outlet but it's not work. Do u have some tecnique to tell me? Please I know this maybe easy for u but I just use Fluent program for the first time... Hope to see ur reply
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November 30, 2005, 02:51 |
Re: I have some problem about Compressible
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#2 |
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1- What do you mean by "I set the top edge to be wall"
a wall is a wall, with no slip boundary condition. 2- If this is your first time using FLUENT, it is a good idea to start by some tutorials? |
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November 30, 2005, 04:52 |
Re: I have some problem about Compressible
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#3 |
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Anyway, I asked my supervisor for some advices but I get quite not good result. I used Coupled Solver.
2 I enabled energy eqn. 3 I chose K-epsilon 2eqn+Reallizable 4 I chose Ideal gas of air. 5 It's quite difficult to explain my geometry but It's so basic. 6 I started courant number(Solution Controls) at 0.5 7 when I run it, I think I got a not good result. Please Help me!!! leave me ur e-mail, I will send picture of geometry to u. But u have any advices, don't hesitate to post it. , Cruger |
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December 1, 2005, 09:52 |
Re: I have some problem about Compressible
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#4 |
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Try to use mass flow or pressure inlet.
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December 5, 2005, 07:05 |
Re: I have some problem about Compressible
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#5 |
Guest
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ya, use Pressure inlet. Assuming Ma=1 at the inlet, give Po & To. Put a very fine mesh in the jet region. Use low relaxations for pressure.(0.1-0.15).
Hope this will solve ur issue. |
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