# 'FSAE Full Car Aerodynamics' simulation project by pfernandez

#1

I created a new simulation project called 'FSAE Full Car Aerodynamics':

FSAE-Workshop Session-2 Homework project for aerodynamics of complete Formula Student Race Car

More of my public projects can be found here.

#2

NOTE: These are preliminary results from a simulation after 3000 iterations, still not a fully converged solution. We will also talk about local contributions. Tecnically speaking, pressure drag makes sense as drag only after it’s been integrated over the surface of a closed body [1], and although the front and rear wings have opposed segments (if you take a segment of constant y you get a closed loop) the local drag contribution we are considering rises some questions. We’ll take our chances anyways.

## Drag coefficient

The largest contribution to drag comes from the rear wings, being the next contributor the frontal end of the car.

## Lift coefficient

Most of the car generates downforce, being the front wing the largest contributor to downforce. Even though the front wing has fewer elements and a smaller exit angle that the rear wing, it gets clean undisturbed air and is influenced by the ground effect.

## No wings

You can compare this results with the ones from a FSAE without any aerodynamic elements in the following project:

https://www.simscale.com/projects/pfernandez/aerodynamic_analysis_of_the_tsc-03e/

## References

1. McLean, J.D., “Understanding aerodynamics: arguing from the real physics,” 1st ed., Wiley, Chichester, ISBN 978-1-119-96751-4, 2012.

#3

For this case we achieve a converged solution after about 6000 iterations. In this case we have a look at the force coefficients where we can see that after 5000 iterations the solution flattens.

The final converged solution yields a higher drag value as can be seen in the following chart.

In the converged solution, the rear wing contribution to downforce increases, yielding now a similar value to that of the front wing.

#4

Awesome work!