[charade_4eft]

Hi,
I am trying to perform flow in two dimensional pipe. The pipe consist of inlet, outlet, lower wall and upper wall as boundary condition. I am trying to induce sinusoidal wave in lower wall using Dynamic mesh technique. The user defined function is complied and assign to lower wall, so it can generate fluid flow.

My problem is that velocity contours shows zero velocity on outlet boundary

Note: I am trying to generate flow using wall movement only. There is no pressure difference across inlet and outlet.

Any help is greatly appreciated.