Learning Forum

[aram.alizadegan]

Hi every one

I am working on a tall building CFD and I have to validate my results. so I need to compare Cp (pressure coefficient) of some points on building with experimental results. I have create points and for creating Cp expression I enter this formula into Expression:

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

But it gives an error with this description:

[SVV]

Hi Can you please look into the definition of Reference pressure again. I guess the Reference pressure is not defined correctly.

[aram.alizadegan]

thank you for your response
the problem is that there is no reference pressure expression in expressions. I checked older version of Ansys (18) and in that version, by default, the reference pressure expression has been created.
So I created a reference pressure expression by my self, but when I want to use the variable which uses Pressure Coefficient it gives this error!
I don't know how can I solve this problem!