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-   -   static stall (http://www.cfd-online.com/Forums/main/7248-static-stall.html)

atrh March 7, 2004 08:28

static stall
 
hi, i am using fluent 6 to simulate the stall condition. reynold no is 360000. the lift and drag increases as angle of attack increases ( as expected ) but could not perdit stall condition ( decrease in lift and sharp increase in drag ).at 360000 reynold no , the stall should be around 10 to 14 degree . i did try till 22 degree but could simulate stall condition.the y plus is less than 1 at all aoa and aspect ratio is also ok and turbulent to molecular viscosity ratio is about 1.2. i have tried all models but failed to perdit the stall condition.can any one suggest me any thing.

sylvain March 9, 2004 07:07

Re: static stall
 
That's the big issue with turbulence models : they can hardly predict stall angle. That's the reason for DES and LES to exist.

Best Regards,

Sylvain


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