[bobdorm14]

I have a problem regarding the interface between a rotating and static cell zone. Which settings do i need to adjust in Fluent to have a correct simulation? The case is pretty simple. I have a rotating cell zone which update based on calculation made in UDF dynamic mesh.

I set both the rotating and static domain as fluid zone.the problem ,there is pressure different at the border between rotating and static zone as the circle domain start to rotate.I only set airfoil as the wall.supposed there is*only pressure on the airfoil as fluid interact with wall (airfoil).

for dynamic mesh,the airfoil and rotating domain was set as rigid body and both the node position will update simultaneously at each time step.

the velocity was set at the left side and pressure outlet at the right side on the static cell zone.

can anybody help ..

[davd4696@gmail.com]

Hi,
have you created an interface boundary cndition between your static and rotating domains?

[bobdorm14]

hi David

yes I created the interface under 'mesh interface' and periodic boundary condition selected under 'interface option'

I created two different domain with two different parts in geometry modeler.
I inspected there is a little gap at the border between these domains.
I think that is not the problem as I set both as fluid cell zone..

[davd4696@gmail.com]

It looks to me that your interface is set up incorrectly, have you created a named selection for the static edge and the rotating edge and used these to created your interface?