Pressure Coefficient in CFD-Post

plucas · August 20, 2016, 13:42

I am looking to setup Cp in CFD-Post and I am running into issues. These are my current steps:

I create a new expression called Cp1
(2 * (Pressure - 0 [pa])) / (1.225 [kg/m^3] * (45 [m/s]^2)

Then I created a User Defined variable called Cp using the expression Cp1.

I continue to get errors. Any help would be fantastic.

Thank you for the help fellows!

plucas · August 21, 2016, 19:24

Figured it out. If anybody has the same issue, found the solution in the CFX manual.

(Pressure - Reference Pressure ) / (0.5 * areaAve(Density)@inlet * areaAve(Velocity)@inlet^2)

Mohawk · August 22, 2016, 03:49

This may help http://adf.ly/1dLnl4

August 20, 2016, 13:42	Pressure Coefficient in CFD-Post	#1
plucas Senior Member Anonymous Join Date: Dec 2011 Location: USA Posts: 108 Rep Power: 14	I am looking to setup Cp in CFD-Post and I am running into issues. These are my current steps: I create a new expression called Cp1 (2 * (Pressure - 0 [pa])) / (1.225 [kg/m^3] * (45 [m/s]^2) Then I created a User Defined variable called Cp using the expression Cp1. I continue to get errors. Any help would be fantastic. Thank you for the help fellows!

August 21, 2016, 19:24		#2
plucas Senior Member Anonymous Join Date: Dec 2011 Location: USA Posts: 108 Rep Power: 14	Figured it out. If anybody has the same issue, found the solution in the CFX manual. (Pressure - Reference Pressure ) / (0.5 * areaAve(Density)@inlet * areaAve(Velocity)@inlet^2) mz_uon, aragosta, aero_head and 1 others like this.

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August 22, 2016, 03:49		#3
Mohawk Member Mustafa Join Date: May 2013 Posts: 54 Rep Power: 12	This may help http://adf.ly/1dLnl4