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-   -   How to control pressure jump in a fan? (http://www.cfd-online.com/Forums/fluent/40481-how-control-pressure-jump-fan.html)

Ana April 7, 2006 06:35

How to control pressure jump in a fan?
 
Hi,

I'm doing a project in which I need to create the performance curve of a fan (pressure jump versus flow rate) and I'm having problems with the boundary conditions, I have tried pressure inlet and pressure outlet, 2 pressure outlets and finally mass flow inlet and outflow. With the last one Fluent doesn't make anything, and tells me that k diverges.

Can somebody tell me which one of the 3 boundary conditions is better for my purpose, and if it is the third one, does anyone know what the problem is?

Thank you

Ahmed April 8, 2006 08:25

Re: How to control pressure jump in a fan?
 
Tutorial 8, Using multiple rotating reference frames deals with a centrifugal blower, pressure-inlet and pressure outlet are used, k-epsilon turbulence model. Check your mesh and Good Luck


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