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Vortex Aerodynamics

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miqi23
miqi23
7
Joined: 11 Feb 2006, 02:31
Location: United Kingdom

Vortex Aerodynamics

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Hello All,

I was wondering if any of you guys had access to any papers regarding Vortex Aerodynamics? I would be most grateful if you can let me have a copy of it.

Many Thanks :P
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zac510
zac510
22
Joined: 24 Jan 2006, 12:58

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Here are a couple to start you off:

Behaviour of trailing vortices:
http://in3.dem.ist.utl.pt/downloads/lxl ... f/04_5.pdf

Edge vortices:
http://in3.dem.ist.utl.pt/lxlaser2004/p ... r_35_2.pdf

Vortex behaviour on F1 underbody:
http://www.aero.lr.tudelft.nl/education ... 4_1_05.pdf

Theory of gurney flap (is vortex related):
http://www.tesionline.it/__PDF/9614/9614p.pdf
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Carlos
Carlos
11
Joined: 02 Sep 2006, 19:43
Location: Canada

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Zac510 - Thank you for sharing these atricles. The kind of material that you are only exposed to with advanced University study by those willing to research extensively. I would never have found them in my generalized web research. Make sure to read Ciro's post on the "NSX vs M3 which to buy thread "- posted today - it is the post that defines why we are all on the forum.
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miqi23
miqi23
7
Joined: 11 Feb 2006, 02:31
Location: United Kingdom

Post

zac510 wrote:Here are a couple to start you off:

Behaviour of trailing vortices:
http://in3.dem.ist.utl.pt/downloads/lxl ... f/04_5.pdf

Edge vortices:
http://in3.dem.ist.utl.pt/lxlaser2004/p ... r_35_2.pdf

Vortex behaviour on F1 underbody:
http://www.aero.lr.tudelft.nl/education ... 4_1_05.pdf

Theory of gurney flap (is vortex related):
http://www.tesionline.it/__PDF/9614/9614p.pdf
Thanks a lot Zac, sadly I had these ones already and was hoping for something new but Thanks a lot mate!
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zac510
zac510
22
Joined: 24 Jan 2006, 12:58

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OK if you find more, please post in here :)

NASA has awesome stuff on aeronautical vortices, including images/videos/etc. That's where I learnt the principles (I'd never say I truly understand them :D) of vortices.
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miqi23
miqi23
7
Joined: 11 Feb 2006, 02:31
Location: United Kingdom

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I have not read any stuff by NASA on Vortex Aerodynamics but getting it to work on Aircratfs is not a problem.

My problem is to get the damn thing to work underbodies with hardly any height above the ground!

Zac, if you have experience in this please free to post it here and it would be great to see what you can suggest.

Thanks once again.
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zac510
zac510
22
Joined: 24 Jan 2006, 12:58

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I don't have practical experience sorry, I'm just a keen enthusiast!
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jddh1
0
Joined: 29 Jan 2007, 05:30
Location: New York City

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I'm learning that kind of thing right now in grad school here at University of Michigan. But to apply any of the theories I feel like I need to undertake a project or a simple experiment.
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miqi23
miqi23
7
Joined: 11 Feb 2006, 02:31
Location: United Kingdom

Post

jddh1 wrote:I'm learning that kind of thing right now in grad school here at University of Michigan. But to apply any of the theories I feel like I need to undertake a project or a simple experiment.
What have you learned so far and what can you propose as a project? ;)
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tf1
tf1
0
Joined: 09 Mar 2006, 20:44
Location: Japan

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One thing that I find really lacking in a lot of today's research at the university level is good correlation work between CFD and wind tunnel data. Getting actual F1 geometries is a very difficult task but you don't really need to work with the actual geometry to get a good idea about the fundamental flow physics involved.

The real problem as I see it at the moment is that the current commercial codes suck at modeling the dissipation of the vortexes. There are lots of papers on this topic as that is what is driving a lot of the LES and higher order methods work going on. I am not sure exactly what you are trying to do with vortexes and underbodies, but that area is typically affected heavily by a lot of stuff up front in the car. To really understand what is happening, you need to do a lot of wind tunnel work with stuff like LDA and PIV to visualize the flow and then figure out how to get the CFD code available to get as close as possible to that.
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miqi23
miqi23
7
Joined: 11 Feb 2006, 02:31
Location: United Kingdom

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No worries, its sorted ;)
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Carlos
Carlos
11
Joined: 02 Sep 2006, 19:43
Location: Canada

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NASA Virtual Windtunnel:
http://www.nas.nasa.gov/Software/VWT/vwt.html
Edited
Last edited by Carlos on 17 Apr 2007, 02:22, edited 4 times in total.
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Carlos
Carlos
11
Joined: 02 Sep 2006, 19:43
Location: Canada

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A list of freeware and shareware CFD code list - mostly University sources:
http://www.cfd-online.com/
http://www-berkeley.ansys.com/cfd/CFD_codes_p.html
Wings 3D- Yes a model airplane program - but you can use it to make lots of things. :wink:
http://wings.sourceforge.net/
Last edited by Carlos on 17 Apr 2007, 03:01, edited 6 times in total.
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Carlos
Carlos
11
Joined: 02 Sep 2006, 19:43
Location: Canada

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Freeware and Demo Stats programes:
http://www.psychnet-uk.com/experimental ... ckages.htm
Math Programs:
http://mathforum.org/library/resource_t ... _to_see=50
Edit - Yes a little off thread - I admit it :wink:
Last edited by Carlos on 17 Apr 2007, 02:17, edited 3 times in total.
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Phoenix
0
Joined: 23 Jul 2006, 00:29

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Wow, these are some great finds! I now have a summer reading project!!!
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