Pressure on the free slip wall
 

Hi,everyone

I'm trying to simulate the flowfield of a wind turbine. The domain is shown below. The rotating frame of reference was used in the simulation.

The boundary condition of the cylindrical surface is free slip wall.

The result of streamline is reasonable. But the pressure on the free slip wall is reasonless.

The result of the pressure on the boundary is shown in the picture. How to solve this problem?

Best regards, yliu

http://lh6.google.com/image/THUWind/...5CPressure.JPG

Re: Pressure on the free slip wall
 

No pics ...

Re: Pressure on the free slip wall
 

It seems that my html code is not correct.

The picture URL is

http://lh6.google.com/image/THUWind/.../sDRzH1-Ivrg/G%3A%5CPressure.JPG

Thank you :)

Re: Pressure on the free slip wall
 

Hi Yliu,

What are your other boundary conditions? The variation is only +/- 200 Pa, which is fairly small. It may simply be due to roundoff.

-Robin

Re: Pressure on the free slip wall
 

Try tri linear pressure interpolation. It can be activated on the advanced tab of the solver control branch.

Re: Pressure on the free slip wall
 

Hi,Robin and Hekler Thank you! I have tried tri linear pressure interpolation. But there is no improvement. I think the mesh maybe too sparse.