CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Modeling of a HVAC Fan (http://www.cfd-online.com/Forums/fluent/117044-modeling-hvac-fan.html)

Evona May 1, 2013 03:15

Modeling of a HVAC Fan
 
2 Attachment(s)
Hi there!

I am in the process of modeling the flow rate produced by a HVAC fan and am having trouble with some details.

The details:
  • The geometry involves the fan system in a cylinder fluid body with a small tip clearance.
  • Attachment 21342

    (Although Solidworks can't show it well, the fan blades actually have a uniform tip clearance of 6mm)
  • The only details that I have been given are at follows:
  • Fan speed 1463 RPM
  • Fan Inlet/Outlet differential static pressure 160Pa

How should I approach this analysis in Fluent?

I understand that the differential static pressure is the difference in pressure between the inlet and the outlet but I cannot figure out how to apply this in Fluent.

Should I set the Inlet Boundary Conditions in Fluent to a "pressure-inlet" type, set the Gauge Total Pressure to -160Pa and do the same for the outlet but use atmospheric pressure instead?

And as for the rotation of the fan itself, am I right in saying this is done through settings in the Boundary Conditions of the fan body?
ie. Moving Wall, Rotational, Relative to Adjacent Cell Zones, Rotation-Axis Origin (0,0,0) and Rotation-Axis Direction (0,1,0)

Attachment 21343

Any help here would be fantastic!

Thanks :)


All times are GMT -4. The time now is 01:02.