Aug 8, 2017 · Race car diffusers absolutely need significant airflow to work, and work best with fences which create vortices. There are other ways of generating force without much flow but these will have to wait as they aren’t as effective.

Apr 15, 2015 · Let’s start with the primary function and operation of a diffuser; ‘The key role of the diffuser on a modern racecar is to accelerate the flow of air under the car, creating an area of low pressure, thus increasing downforce.’

Oct 1, 2023 · Stroll through the grid at a club race, time trial or track day, and you’ll see these devices peeking out from beneath back bumpers. Is it a case of monkey see, monkey do, or do these diffusers actually help a car stick to the road? To …

A diffuser, in an automotive context, is a shaped section of the car rear which improves the car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere.

Nov 12, 2013 · Diffusers are to downforce what cones are to ice cream. Find out how they work at Car and Driver.

Sep 18, 2024 · The diffuser itself is a shaped channel at the rear of the car that allows the air flowing under the car to expand and slow down. The expansion ratio of the diffuser (the ratio between its inlet and outlet areas) is a key parameter in its design.

Apr 18, 2018 · Diffusers, in motorsports, are aerodynamic devices typically located on the underside of the vehicle to aid in aerodynamic performance by using ground effects. Diffusers are normally located in the rearmost section of the floor and/or on the rear section of a front splitter.

May 14, 2021 · As diffusers run adjacent to the rear wheels in a real scenario, they are especially susceptible to the high pressure jet of air that shoots laterally from the front of the tyre contact patch towards the centreline of the chassis.

Oct 8, 2020 · So you watched a race recently and think you think you need a rear diffuser. First of all, unless you ALREADY have a MASSIVE front aero package AND a MASSIVE rear wing, you don't "need" a diffuser...

May 14, 2021 · The aim of the diffuser is to gradually expand the underbody flow as it transitions to the rear of the race car. What's key to this mechanism is that the diffuser section effectively functions to assist the ‘extraction’ of air through the throat and therefore it’s design ultimately defines the effectiveness of this larger process of ...