Center of Pressure multiplication
 

Dear All
I am solving external flow on a half symmetry model and want to calculate Cl, Cd, Cm, Cp( center of Pressure. My question is since model is half one have to multiply the factor of 2 with Cd, Cl, Cm. Will he also multiply the value of Cp with 2. The formula which i use for calculation of center of pressure is
CPX=((areaInt_x(X*Pressure)@car+areaInt(X*Wall Shear X)@car)) /((areaInt_x(Pressure)@car+areaInt(Wall Shear X)@car))

CPY=((areaInt_y(Y*Pressure)@car+areaInt(Y*Wall Shear Y)@car)) /((areaInt_y(Pressure)@car+areaInt(Wall Shear Y)@car))

CPZ=((areaInt_z(Z*Pressure)@car+areaInt(Z*Wall Shear Z)@car)) /((areaInt_z(Pressure)@car+areaInt(Wall Shear Z)@car))

No, you dont need to do that.

But you dont need to calculate CP in the sym normal direction. That will lie right on the sym plane. If you calculate it, it will be in the body away from the sym plane becuase you dont have the other side in your model.