Moving boundary conditions
 

Hi guys,

I hope someone will help me! I have this problem: I have a tunnel long more or less 100meters and some air inlet points on its wall at a fixed distance. Inside this tunnel, objects moves with constant velocity of about 3 meters per minute.

My idea was to simulate only one part of this tunnel with a fixed position for the body inside and translate the boundary condition in order check the effects of the air inlets on the body.......
Other possibility is to move the body inside the tunnel but it increase critically the number of elements and makes more complicate everything.

Quite complicate but I hope clear.

Anybody have some suggestion?

Thank you in advance,
Matteo

go to boundary conditions, use Moving Wall option for Wall Motion in Momentum tab

Hello,

moving wall is available only for boundary condition wall, so it is not available for inlet boundary conditions..

as far as I undestand, you have inlet in the left (for instance) of domain, top and bottom wall, which represents the tunnel and outlet on the right
so you don't need to apply moving wall to inlet and outlet, apply it to the walls only