CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   about local bump shock wave drag reduction (http://www.cfd-online.com/Forums/main/73092-about-local-bump-shock-wave-drag-reduction.html)

fxzf February 26, 2010 07:39

about local bump shock wave drag reduction
 
Is there any ppl could advise me who was the first developed the bump shock reduction theory? And which literature gave a well present about this theory? Thank you very much!

Vladik February 26, 2010 08:11

If you imply weakening a shock wave with surface bumps, then one of the earliest papers concerned with the problem was that by Tai et al., AIAA Paper 87-1239, 1987. A brief review of developments performed before 2002 is available in Section 4.3.2 of the book "Boundary Value Problems..." by A. Kuzmin.

fxzf February 26, 2010 11:20

Quote:

Originally Posted by Vladik (Post 247613)
If you imply weakening a shock wave with surface bumps, then one of the earliest papers concerned with the problem was that by Tai et al., AIAA Paper 87-1239, 1987. A brief review of developments performed before 2002 is available in Section 4.3.2 of the book "Boundary Value Problems..." by A. Kuzmin.

Thank you very much for ur kindly reply. Unfortunately, I cannot download those papers due to the my universities' poor library. In Tai's paper, did he propose the single hump to weakening a shock or double-bump? Thank you very much!

Vladik February 26, 2010 12:16

Tai et al. proposed a single bump and used test facilities for research. A sort of double bump on an airfoil was examined with CFD by Sobieczky & Seebas in Ann. Rev. Fluid Mechanics, Vol. 16. pp. 337-363, 1984.

fxzf February 26, 2010 13:02

Quote:

Originally Posted by Vladik (Post 247653)
Tai et al. proposed a single bump and used test facilities for research. A sort of double bump on an airfoil was examined with CFD by Sobieczky & Seebas in Ann. Rev. Fluid Mechanics, Vol. 16. pp. 337-363, 1984.

Ok, I got it. Thanks very much for your help.

praveen February 26, 2010 13:04

See these two links

http://jucri.jyu.fi/?q=testcase/4
http://jucri.jyu.fi/?q=testcase/34

Look at the submitted results of Ning Qin. There is some review in his slides.


All times are GMT -4. The time now is 09:41.