How can I define double suction fan as image ? Internal fan,rotation region, boundary condition or any method?
How to simplify the part?
I’d suggest setting it up and use the manufacturers fan curve.
I‘m assuming this fan is just part of a system you are modelling and you are not just modelling the fan alone.
If you try to model the fan impeller you will need a huge model to resolve it correctly, you would be better modelling the inlet and outlet geometry and then use the fan curve.
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