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Determine the center of pressure

Submitted by F1_Fan on May 23, 2013 - 08:10

Hi,

I have to calculate the aerodynamics of a small formula racing car. Aspecially I want to design a diffusor for this car. My problem is, that I can't find a function in Caedium to determine the Center of Pressure for my downforce. Does a function exist which can show me the location of the CoP?

Thanks for helping me,
Greetings F1_Fan

‹ lift per axle Cost of computing k-kl-omega ›

Center of Pressure

Submitted by symscape on May 23, 2013 - 10:37.

Assuming you define center of pressure as the average position of the pressure acting on your car then you need to create a new result:

cp = Sum(XYZ x p x A) / Sum(p x A)

where:

  • XYZ is Vector Fields->XYZ location
  • p is Scalar Fields->p pressure
  • A is Scalar Fields->A area

For a tutorial on creating new results see "Fluid Flow Around a Sphere: Theory Comparison".

Edit: Corrected for just pressure

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