Onera M6 Validation

steve1 · August 23, 2010, 08:20

I am trying to use CFX to simulate the Onera M6 wind tunnel results at M-0.8395 and 3.06 degrees. The pressure distribution on the upper surface does not follow the wind tunnel data, particularly in the region of the shock wave. Has anyone done this simulation who can advise me of where I am going wrong?

Steve

ghorrocks · August 23, 2010, 08:34

Have you covered the basics? http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

Josh · August 24, 2010, 21:12

I've seen some pretty good results produced with CFX when modeling shock waves. Cover everything in the page Glenn posted. For starters, I'd ensure your y+ values are smaller than 1 to properly capture the viscous sublayer of the boundary layer. I'd also ensure the grid was refined in the shock region to capture any shock-induced separation.

August 23, 2010, 08:20	Onera M6 Validation	#1
steve1 New Member steve levitt Join Date: Jun 2010 Location: UK Posts: 9 Rep Power: 16	I am trying to use CFX to simulate the Onera M6 wind tunnel results at M-0.8395 and 3.06 degrees. The pressure distribution on the upper surface does not follow the wind tunnel data, particularly in the region of the shock wave. Has anyone done this simulation who can advise me of where I am going wrong? Steve

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Validation of wind turbine simulations using experimental data of much lower Re	Dorit	Main CFD Forum	0	March 31, 2010 06:20
Looking for data of ONERA M6 wing	Chih-Hao Chang	Main CFD Forum	2	May 29, 2009 12:49
Does anybody have onera M6 grid ?	aeroman	Main CFD Forum	0	November 7, 2006 01:48
Urgent: RAE 2822 validation	NID	Main CFD Forum	0	September 3, 2004 11:34
Validation of shear mixing layer using kwsst	Samuell	FLUENT	0	September 9, 2003 23:27

August 23, 2010, 08:34		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Have you covered the basics? http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

August 24, 2010, 21:12		#3
Josh Senior Member Joshua Counsil Join Date: Jul 2009 Location: Halifax, Nova Scotia, Canada Posts: 366 Rep Power: 18	I've seen some pretty good results produced with CFX when modeling shock waves. Cover everything in the page Glenn posted. For starters, I'd ensure your y+ values are smaller than 1 to properly capture the viscous sublayer of the boundary layer. I'd also ensure the grid was refined in the shock region to capture any shock-induced separation.