Mutually inclusive
By definition, the word correlation means the process of establishing a relationship or connection between two or more things. In motorsport, the correlation between elements of racecars designed in CAD, tested in CFD, refined in the wind tunnel and then raced at the track is critical, especially with so many series imposing limits on track testing in today’s world. Yet, even with all the technology available in the upper echelons of motorsport, the correlation between CFD, wind tunnel and on-track performance still, in many cases, leaves something to be desired.
The correlation between CFD, wind tunnel and on-track performance still leaves something to be desired
Aerodynamics is one of the largest differentiators in the top classes of modern racing. Teams that make the most of the scope within the regulations to develop their aerodynamics using CFD, wind tunnel and track testing typically better understand how the car works, and are therefore able to develop it further.
However, even top teams experience challenges validating what they see in simulation and testing and how the car behaves on track. In this article we will discuss the challenges of correlation in the field of aerodynamics in motorsport.
Function of CFD
CFD is a powerful numerical tool used to simulate most fluid-dynamic physics in the racecar environment. Modelled areas of the car that require investigation in CFD use continuous mathematical functions to represent the real flow around them. Said flow is the result of many different laws of physics working together.
CFD is used to confirm the car’s calculated aerodynamic behaviour and sometimes refine detailed areas
