Whole impeller or part of impeller?
 

Hi

I'm doing a CFX simulation of centrifugal fan (impeller + volute) with 11-blade impeller. Will the simulation of just one blade (impeller is symmetrical) to save computational effort cause false results, since the volute is not symmetrical?

Can someone help me?

Thanks.

It will definitely not give the most accurate results.

The question is: what are you trying to achieve out of your simulations?, and what level of approximation you are willing to accept.?

You may set it up with the full wheel/impeller, and still not make the best model selection and it will not give you the most accurate results

Summary: there is no free lunch.

Hi Opaque.

I intend to obtain mass flow average value of pressure and total pressure stn frame at impeller inlet, impeller/volute interface and volute outlet.