Gaurav Sharma
steelxpert I performed a dummy test and applied a velocity of 0.1 m/s on wall. After solution , I checked velocity contour on same wall surface and it was in agreement with provided inputs.   You can perform something similar to identify the velocity of fluid particles at the wall surface. A time dependent or steady solution depends on what is your application. For a continuously rotating wall surface, you might be interested in steady state but if the wall velocity changes in the duration, you may need to go for time dependent solution. With this explanation, i think there is no further value addition in transferring the model. Thanks & Regards, Gaurav