Internal Body Aerodynamics - Page 13

mfain · #**421** 03-12-2021, 03:31 PM

Quote:

Originally Posted by phantomjock

Pappy -
As always, NICE work.
Just a tip: a pretty good Rule of Thumb on Radiator Duct Design:

Inlet area 1/6 area of radiator surface area. [From Walter Korff]

I suppose that is something that can be "trimmed" out - which is how I'm planning, a bit of foam, test(?) then 'glass in the shape. Nice catch on the leading edge "lips" on the Camaro's radiator "snorkels" - a nice homage to Dan.

Cheers - Jim

Thanks Jim,

I have a secondary divider (yellow) in the grill area in front of the radiator that diverts a portion of incoming area over the radiator and into duct work that goes to the TB. That divider is adjustable vertically, so it can be used to trim out the amount of air flowing to the radiator core.

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rtj · #**422** 03-14-2021, 11:26 AM

At 11:00 he talks about his radiator ducting.

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rtj · #**423** 03-14-2021, 12:29 PM

One more.

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BBShark · #**424** 03-14-2021, 01:33 PM

Doing that in the rain is pretty impressive!

rtj · #**425** 03-15-2021, 09:43 PM

A bit old and only has 1600 views, but sort of interesting.

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rtj · #**426** 03-18-2021, 11:01 AM

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rtj · #**427** 03-19-2021, 10:58 AM

I guess with the lower speeds involved, he figures the big spoiler on the back is more effective than a wing. It would be interesting to see the downforce/drag vs mph.

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rtj · #**428** 03-20-2021, 02:02 PM

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I was looking for wicker bill info, but found this. Maybe there is some funny car info (wicker bill on steroids).

rtj · #**429** 04-04-2021, 06:15 PM

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rtj · #**430** 04-11-2021, 12:16 PM

These guys post a lot of stuff on their product. One looked at radiator delta p.

This one looks at fender vents, but without the pumping effect of the tire it might not tell the whole story.

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mfain · #**431** 04-11-2021, 05:33 PM

This one looks at fender vents, but without the pumping effect of the tire it might not tell the whole story.

^^^^^^

Good point.

phantomjock · #**432** 04-11-2021, 06:20 PM

There is some information to be learned with a rotating wheel in the case - for sure. NOTE: the effectiveness of the wheel "Spats" on the flow around the wheel in any case. With the addition of air curtains - some significant evacuation could also be effected.

Also, with the open fender (at the rear - popular TimeAttack and prototype layout) there "might" be enough pressure differential to diminish any effects from a rotating tire. [I'll need to look at some other tunnel/tuft studies information to confirm that thought.]

I stumbled on the racelouvers.com site a while back and haven't had time (damn boat) to get through the pages of data they offer; Here is a quick look at the drop down menu:

Enjoy! Lots to be seen there; cooling, fan shrouds, louvers, gurneys, etc.

Cheers - Jim

PS - I note the "earliest" Corvette served is a C4!