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April 28, 2012, 14:26 |
Dirichlet and Nuemann
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#1 |
New Member
cc
Join Date: Mar 2012
Posts: 8
Rep Power: 14 |
Hi everyone,
I want to simulate turbulence over a flat plate. Now I have met a problem about the boundary conditions. I would like to apply Dirichlet Boundary conditions, velocity in the direction y and Nuemann Boundary conditions, stress, for one boundary at the same time. The most important is " at the same time for one boundary" Could you please tell me how can I do this in Fluent? Thank you so much! |
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April 29, 2012, 11:27 |
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#2 | |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
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Quote:
The plate-normal velocity is 0 by kinematic constraints, flow can't flow through the plate. The plate-parallel velocity at the wall is also 0 by no-slip conditions, here is where wall functions jump in. |
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April 29, 2012, 13:28 |
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#3 | |
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April 29, 2012, 16:27 |
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#4 | |
Senior Member
Lucky
Join Date: Apr 2011
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Quote:
What is the extent of this boundary? And you intend to specify the velocity across this boundary + shear? Since flow is in y, you want to specify velocity in (x,z) and shear in (x,z). Is the velocity uniform? What about shear? I am also unclear on another point: Once the velocity distribution is specified, the shear stress is automatically known. How can you specify it further? Providing a sketch would help. |
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April 29, 2012, 23:36 |
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#5 | |
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