Centrifugal Pump 2D and 3D
I have tried to simulate in interaction between impeller and volute using several methods, with varied success.
In 2D, I modelled the cross section of a small centrifugal pump. I set up the suction nozzle, impeller region and volute region up as three different faces and meshed them.
After exporting to Fluent, I set up the impeller region as a rotating referrence frame at 500rpm. This provides sensible results for some models, but not all. Sometimes the solution will not converge. In these cases I used water as the fluid, had a velocity inlet at the suction nozzle and a pressure outlet at the discharge of the volute set to 0 Pa.
With three dimensions I tried applying a similar method, with little success. The fluid being moved by the impeller is unable to progress to the volute.
Any help would be greatly appreciated.
Have you tried giving mass flow inlet and pressure outlet?? Also check if u are giving flowrate in proportion to rpm
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