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Author Topic: Vortex Generators:  (Read 9383 times)
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ggl205
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« Reply #30 on: August 24, 2018, 08:47:47 AM »

OK, now it is clearer. VG's have to angle in on one another for them to be effective (see image). I have seen some VG's that look like raised NACA ducts that I guess work the same way so long as you mount them with the bigger end pointed at airflow.

John


* VG's.jpg (56.35 KB, 245x384 - viewed 141 times.)
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malibuguy79
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« Reply #31 on: August 26, 2018, 07:40:45 AM »

The ones that I put on my car had a template that makes them gradually angle out from center.  Progessing from 0 to 15 degress irrc (this was like 8 years ago)
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tauruck
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« Reply #32 on: September 05, 2018, 05:41:56 PM »

Prof. Joseph Katz recommended I use them on the truck I was building?Huh.
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SPARKY
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« Reply #33 on: September 06, 2018, 12:58:25 PM »

where  huh
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4-barrel Mike
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« Reply #34 on: September 06, 2018, 01:42:17 PM »

where  huh

South Africa.   afro

Mike
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Mike Kelly - PROUD owner of the V4F that powered the #1931 VGC to a 82.803 mph record in 2008!
tauruck
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« Reply #35 on: September 06, 2018, 04:00:42 PM »

The Ranchero I was building. Joe suggested putting Polycarbonate panels on the sides between the rear part of the roof and load box cover.
I wanted to keep the thing looking like I built it so he said Vortex generators would help to a degree.

You guys may not remember but Joe Katz's students built a quarter scale model of my truck at SDSU on their 3 axis milling machine
and wind tunnel tested it. I've still got all the photos and aero results from San Diego. The truck had a CD the same as a Porsche GT3.

The iffy area was between the rear window andload box.
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ggl205
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« Reply #36 on: September 06, 2018, 04:46:19 PM »

Prof. Joseph Katz recommended I use them on the truck I was building?Huh.

Joseph Katz book on race car aero was one of the first I read. Packed with great aero information.

John
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tauruck
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« Reply #37 on: September 26, 2018, 11:26:23 AM »

I wish I could see Joe's car collection. He said he had a few. wink
A genuine guy and always helped and answered my emails.

What he did for me was unbelievable. cool
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