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-   -   Please i need help: Set of boundary conditions for inflow with fan. (https://www.cfd-online.com/Forums/fluent/114331-please-i-need-help-set-boundary-conditions-inflow-fan.html)

 HAJ256 March 9, 2013 06:36

Please i need help: Set of boundary conditions for inflow with fan.

Hello everyone. I am a newbie working with FLUENT. I'm working on the task to school. I will outline my problem. I'm trying to simulate windy turbulence in a plastic box (0.5 m x 0.5 m x 2.5 m) with one input and one output. After the simulation, i compares the simulation results with real measurements.
Problem is: Setting the input boundary conditions. Fails to achieve a comparable situation as in real measurements.

The question is: Can someone help me with setting the input boundary conditions? On entry is the fan, the output is just a hole. Not thinking about heat transfer i am solving just a flow of air.

Thanks a lot for your help.:confused:

This is real measurmets of velocity cross hole with fan.
http://www.email.cz/download/i/adovr...PLA/napric.png

And this is simulation.
http://www.email.cz/download/i/0lRs4...8U/Capture.PNG

 delaneyluke March 14, 2013 10:11

If you have the fan curve, then you can use the Fan BC as the inlet BC

Regards
Luke

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