how to set rotating boundary?

conan

for example, air flows inside a 3D square channel, say x is flow direction, y,z are cross direction,the case is very simple. Now, the channel rotating with its axes, say y-axes, how to set rotating boundary?

if I have set "FLUID,moving frame, ratating velocuty, direction"

what is the difference in wall boundary between "staionary" and "movingwall,relative to adjacant cell zone, speed=0" ?

for this case, which option should I choose?

thank you