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Forum: CFX

December 11, 2018, 08:44

Replies: 7

Pump unphysical efficiency

Views: 974

Posted By Lookid

Thanks! I did not understand if the value...

Thanks!

I did not understand if the value you sent were from the manufacturer, or are your CFD values?

Forum: CFX

December 9, 2018, 16:24

Replies: 7

Pump unphysical efficiency

Views: 974

Posted By Lookid

@Gert-Jan, nice! As you say, it doesn't mean it...

@Gert-Jan, nice! As you say, it doesn't mean it is also true with my case, but if someone experienced it before with good comparison with experiment it's already really nice and gives me hope :))))....

Forum: CFX

December 9, 2018, 05:32

Replies: 7

Pump unphysical efficiency

Views: 974

Posted By Lookid

I agree with you (because I hope it's ok ^^). But...

I agree with you (because I hope it's ok ^^). But if the prediction is unphysical "some times", how to trust the results the rest of the time?

I am wondering if something like that is measurable...

Forum: CFX

December 8, 2018, 18:58

Replies: 7

Pump unphysical efficiency

Views: 974

Posted By Lookid

Pump unphysical efficiency

Hello,

I compute a low specific speed pump with splitter blades. Inlet + Full impeller + Volute. No casing.

Periodically, I have an hydraulic efficiency > 1, it happens when the main blade...

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