|April 14, 2014, 09:36||
CFX-Post: How to calculate pressure loss for Airfoil?
Join Date: Jan 2014
Posts: 2Rep Power: 0
I am having troubles to calculate the pressure loss for my simulation as I get negative results. I am using mesh similar to this one and want to calculate the pressure loss for different angles of attack.
So when I try to apply this formula
=(areaAve(Total Pressure)@inlet -areaAve(Total Pressure)@outlet )/(0.5*areaAve(Density)@inlet*areaAve(Velocity)@inle t^2)
than for some cases I get this:
areaAve(Total Pressure)@inlet < areaAve(Total Pressure)@outlet
and therefore negative pressure loss values.
inlet = circular arc
outlet = vertical line
I use diffrent velocity_u and velocity_v components to realizre the different angles.
Any Idea, what I am doing wrong?
|April 14, 2014, 15:02||
Edmund Singer P.E.
Join Date: Aug 2010
Location: Minneapolis, MN
Posts: 501Rep Power: 11
I suspect it has to do with the curved nature of your inlet and how you are defining your velocity.
Also, switch to massFlowAve(Total Pressure)
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