useful for the intro to my uni dissertation thanks :)
@WaveyDynamics10 ай бұрын
Happy to hear it helps!
@phobiatheory37917 ай бұрын
Amazing video ! Out of interest, what are the main differences between an isolated diffuser compared to a diffuser on race car. ie what kind of interactions from the front and rear wheels and wings effect the diffuser performance and how ?
@WaveyDynamics7 ай бұрын
Thanks for the kind words.. Well all other things equal i.e an equal area of flat floor upstream the substantial differences vs. The arrangement discussed here are that most flat floored race cars will have: 1. A front diffuser 2. 4 wheels influencing flow across the entire underbody 3. Depending on the car type, a rear wing close enough that it’s affecting the flow field in the divergent section In very short summary, the front diffuser will affect the quality of flow travelling to the divergent section in terms of turbulence and mass flow, each of the 4 wheels will kick out a fairly substantial volume of air towards the centre of the car, again negatively influencing the flow quality at different points of the underbody. The rear wing can also be positioned (look at Group C cars for reference) adjacent to the flow leaving the underbody where the low pressure field underneath the wing will act as an extractor - drawing a larger volume of air under the car and also helping the flow in the divergent section to stay attached. Interesting stuff! I welcome any follow up questions if you have them - Jahee
@helixwd7392 жыл бұрын
Do these vortices only provide a benefit when running them along the edge of the floor or can they be ran further inboard of the diffuser? Great video🙂
@WaveyDynamics2 жыл бұрын
Thanks! I briefly explored (in CFD) a couple of techniques to test the same theory actually but after the initial results weren't promising i moved on. The benefit of having them by the shoulder is that the flow exposed to the diffuser section is travelling upwards - If you have the wrong side of the vortex exposed as well, you're not only drawing air upwards, but also drawing it downwards on the other side, the net effect is a loss - especially as any flow device used to generate the vortex messes up the flow upstream too..!
@francescoindolfo Жыл бұрын
Hi, could you share the cad files of your diffuser as I would like to do some cfd simulation on my own for a project please?