The Diffuser #

Introductory Thoughts #

A diffuser produces downforce, and can reduce drag.

Diffusers have a local maximum for performance, which is annoying. It just becomes a game about keeping the car in its proper TDF operating window.

Diffuser performance is subject to the mass intake flow between the ground and the unertray, and therefore is influenced to a large extent by the front wing setting.

“If the diffuser is starved of mass flow, then it will lose its force enhancement function.”

“Unsteady, highly turbulent intake flow will not create a benign environment for force enhancement vortices. “

Influence of the rear tire is massive. Link ‘the secret aerodynamicist’

Introductory Thoughts #

“Rear wing affects the diffuser performance through an induced flow field”.

Synergy #

“Rear wing affects the diffuser performance through an induced flow field”.

Reference Willem Toets article

Look at the expansion ratio drawings in my notebook. Are they relevant?

Run the diffuser in isolation, and then with a rotating tire outboard of it. The diffuser + tire interaction is supes important.