topic Re: Part FanP in CFD Forum

Part FanP

dmurray2AZXN — Fri, 01 Apr 2022 13:33:51 GMT

Is it correct to assume that under Results > Parts that "Part FanP" for an internal fan is equivalent to the pressure drop across the fan?

Re: Part FanP

KubliJ — Fri, 01 Apr 2022 18:18:37 GMT

Hi @dmurray2AZXN

My expectation would be that the Part FanP would show the deltaP, or pressure increase to create flow rate. However, I looked at a model I have and it showed a value of 0 but showed the correct volume. This was in version 2019.

Are you possibly seeing the same thing?

Thanks,

James

Re: Part FanP

dmurray2AZXN — Mon, 04 Apr 2022 13:59:45 GMT

@KubliJ thank you for getting back to me,

The snip below shows the Fan results for two scenarios. The results on the left are my baseline and the results on the right are from a modification made to the exhaust path in attempt to reduce the pressure drop across the fan. The pressure reduced and the flow increased as expected

Re: Part FanP

KubliJ — Wed, 06 Apr 2022 20:32:37 GMT

Hi @dmurray2AZXN

Sorry for how long it has taken me to get back. But it looks like things are working as expected. Generally speaking, on a pump performance curve, I would expect flow to increase if the pressure drop through the system was reduce. Meaning that the fan is converting less energy into pressure and more into flow.

Looks good!

Thanks,

James