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Old   June 15, 2010, 13:10
Default Continuity between interface
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Maxime
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Hi,

I try to create a 2D-simulation of a wind turbines which include moving blades. I generate all the grid motion with sliding mesh and UDF Files.
Everything works well, but if i run a simulation, i can see that the continuity of pressure and velocity is not taking into account. I try to reduce the time step size and reduce size's meshes but nothing change. To do that i used a laminar model to see in a first time what happens for a low Reynolds number (20 000).

I look forward to hearing from you,

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Old   June 16, 2010, 01:07
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Maxime Perelli
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You mean, the flow doesn't seem to go through the interface?
If yes, then did you defined interfaces between your 2 moving regions?
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Old   June 16, 2010, 09:23
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The flow go through the interface, but if i plot the velocity magnitude, the pressure, or the streamlines we can see sth completely impossible, in terms of physics. I tried with a simple case, just two fluids with one was rotating and the results is very strange.
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Old   June 17, 2010, 01:32
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can you post a picture of what you mean (with mesh overlaying).
The Mesh difference between the interfaces shouldn't be too large because of the extrapolation
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