Continuity between interface
 

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,

Titasse

You mean, the flow doesn't seem to go through the interface?
If yes, then did you defined interfaces between your 2 moving regions?

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.

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