Flat plate transition
Hello,
I'm trying to simulate the transition on a flat plate using an extremely fine mesh and a high order DNS. I wonder what boundary conditions I need to impose in order to obtain transition. Because on a flat plate without a pressure gradient I suppose the only factors that can trigger transition will be the free stream turbulence and the surface roughness. I don't plan to include the surface roughness into this simulation so i suppose if I don't somehow include some fluctuations in the boundary condition I will never be able to catch the transition. How will be best to include these fluctuations ? I was thinking at adding some random noise (or to use a step function at each time step) to alter the speed in the chordwise direction. Thanks. |
I think you may read the papers by Fasel about how to generate disturbance to produce transition.
|
This is the article ?
"Spatial direct numerical simulation of transition phenomena in supersonic flat plate boundary layers" If not, can you please send me the title of Fasel paper. Thanks. |
The following papers might be of help, although some of them are for bypass transition...
http://www.liv.ac.uk/~em22/papers/GT-2002-30238.pdf http://www.liv.ac.uk/~em22/papers/96-GT-444.pdf http://www.liv.ac.uk/~em22/papers/origins_of_spots.pdf |
Thanks SSK
|
Dear SSK
Your lins are very useful. I'm working on transition modeling in flat plate too. I need details of some experimental data. Would you help me how can i found them? ghazanfar.zahedi@gmail.com Thanks alot for your favor Ghazanfar Zahedi |
All times are GMT -4. The time now is 17:05. |