A CFD Analysis of a Historic Formula One Car: Brabham BT52
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- Опубликовано: 6 авг 2024
- This video is the first of a series that analyse historic F1 car with Computational Fluid Dynamics. This initial study will form the basis for other analysis of either this model or others.
Other model include:
McLaren MP4/2
McLaren MP4/4
March 881/891
Ferrari 640
Two images of the DeltaWings are CC licence:
Chris Pruitt commons.wikimedia.org/wiki/Us...
and
Mark Denkert www.flickr.com/people/9684885...
creativecommons.org/licenses/... 
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Very nice stuff
I'd love to see a CFD analysis of both the 1980 AAR Eagle and the 1981 AAR Eagle Pepsi Challenger
Excellent Nelson, thank you. The real story of this car is the engine, the legendary BMW M12, using stock cast-iron blocks from a 4-cyl BMW sedan (If you want to know why the BMW Headquarters in Munich is 4 cylindrical towers, it's because of that engine. It, not their sixes, made the company). Turboed OUT THE ASS, it produced something like 1400HP at max boost, their dynos maxed out at 1290, but it's a good hunch. Old iron blocks were selected from FAMILY SEDANS that had over 100k km on them as the were reliable. Piquet became the first driver to win a driver's championship in a turbo-powered car, he said it was like a rocket w/ a switch. For those familiar w/ the secondary imbalance forces associated w/ inline 4s, on one occasion the pistons shoved the crankshaft down through the crankcase onto the track! The enormous power from the single giant turbo played into aerodynamics as well, allowing the car to run w/ a smaller engine and have less frictional heat loss as a result (less moving parts), smaller radiators, and thus the skinny short sidepods vs the enormous ones on the Renault RE30.
Great stuff, let's have more of this sort of stuff 👍
McLaren MP4/2 just finished. 👉
wow...Great Video 👍👍👍
Nice to see this attempted. Not convinced that you've captured the aero contributions. Some details matter and I think there are some important ones missing such as a radius on the leading edge of the floor/side pod and variations in car height and yaw. Probably worth finding an actual car and getting more photos to refine the accuracy of the model. One would have to do that to the whole grid of cars to the same level of detail to be able to really comment on the relative aerodynamic performance of the cars... My experience suggests that drivers of this era would be able to detect changes in overall balance to a few % so it is highly unlikely that the cars ran with the low aero balance your estimations suggest. The model is extremely simplistic.and experience of wind tunnel testing in the mid 1980's suggests that this simplification has a significant impact on the predicted forces. So, my feeling is much more detail is needed.
Really appreciate the feedback. My idea was to do a longitudinal study. Stating the number from steady state is precarious to say the least, but I'm try to not emphasis the numbers to much or at least mention them relatively. This being the first model I don't have that relative context.
I agree the model could be better, particularly the floor edge. But, I'm try to paint a broad brush...if that means anything. I was planning to go back a do a series if these cars with steering and yaw. It would probably be an opportunity to fix all the modelling errors in all the cars.
The Haynes workshop manual gave Mansal's feedback from his test and he mentioned that this handling characteristic were strange. Though not specifically strange. I've seen many images of this car at all ride elevations so run this simulation at this ridiculous height didn't seem that absurd. Seeing the front wing effect the rear wing was a good enough result to publish in a YT video..... Changing the front wing height was just some else..among many. I am running these on a gaming pc.
Again, really appreciate the feedback.
@@nelsonphillips good effort. Gaming PC's despite being fantastic machines are not able to give realistic results for a aero calculations like these but rough trends will normally be in the right direction. I do very much love that you're giving it a go!
Sure, its not your average gaming PC, it supports 67mil cell mesh, should mention that somewhere....it a little important. The mesh is still only created with snappyhexmesh, so there is room to improve here as I'm still wall modelling. So if I am to run a marginal aero surface, like i did with the march 881 the results start to get a little difficult.
I'm more than willing to give you one of the models for you to run because I really have no interest in believing my own BS.
these videos are pretty amazing. it would be nice if you could make a series about the basics of race cars aero, like: how a floor/diffuser works? with a basic CFD model. That would help a lot to follow your detailed analysis.
One of the most beautiful cars of formula 1 ever!
Actually not a bad design given Gordon was working with limited tools.
He made what looked like it would work and it actually did
The more I learn about Murray, the best way to describe his car designs is competent. Hes not an innovator like, say, Barnard. The things that need to be done right, he does right. He also has a great eye for how things go together, the MP4/4 is a great example of this. Should release that video, probably, on the weekend.
@@nelsonphillips mp4/4 is a true Gordon's masterpiece
this is amazing. where can I get the 3d model?