External Aerodynamics

External Aerodynamics involves the simulation of fluid flow over the external surfaces of an object such as a vehicle body to calculate the amount of drag and lift (or downforce) generated.

In an automotive application, the aerodynamic forces (lift, drag and cross force) play a huge part in influencing the vehicle’s fuel efficiency and handling. This is especially true in motorsport applications where wings and other aerodynamic devices need to be tuned in order to give an ideal balance between drag and downforce in the trade-off between top speed and cornering/braking grip.

Our software allows us to calculate these external aerodynamic effects in a virtual wind tunnel environment with nothing more than a CAD model – no expensive prototype parts required, no wind tunnel needed, and test parameters or design changes can be quickly and easily assessed. Effects such as wheel rotation, ground movement and even component deflection under load can also be included in our modelling so you can be confident that all the important factors affecting the results are covered.

We use our aero simulation capabilities to investigate a range of automotive aerodynamics problems including:

- mapping lift & drag vs angle of attack for racecar wings

- design & assessment of diffusers

- ideal location of rear wings on racecars

- determining drag forces on large trucks

- optimizing design of structural members supporting aero devices

Whether you’re looking to reduce fuel consumption or find those few precious tenths on the track, contact us now to discuss how we can use these tools to your advantage.