[commonyue]

Hi,i am carrying on the simulation of stirred tanks, and in all the papers, the tanks were divided into two domains, a roational domain including the shaft and impeller and a stational domain including the baffles and tank walls, interfaces were used to connect them together. i wonder why cannot use only one domain and set the surface of the impeller and shaft as rotational wall and give a rotaional speed?

Thanks for everyone who help me.

Best Regards,Li