2D incompressible turbulent flow
Dear for all, I'm going to simulate the steady incompressible turbulent flow arrond an airfoil. There are many Formulations such as : Mac method, Simple, piso...etc. But wath is the best one for these kind of problemes? Thanks for your response in advance

Re: 2D incompressible turbulent flow
If MAC, SIMPLE, PISO are equally unfamiliar to you, Choose SIMPLE for popularity. MAC requires Catesican grids.

Re: 2D incompressible turbulent flow
Thanks versi for your response. It is not an equation, that is unfamiliar or no for me. I surch what is the suimple method regarding the other ones. For Mac method is then employed in generalised coordinates.

Re: 2D incompressible turbulent flow
MAC  is the most simple, SIMPLE  most popular. I've worked on both and if you use a turbulence model (ke or RSA), i'd suggest using SIMPLE. Have you tried LES or DNS? I've tried Piso, but not much luck, I'm afraid.

Re: 2D incompressible turbulent flow
very thanks Nick, Yes, I surch the eseay method. For steady incompressible turbulent flow I'm going to start with kepsilon model and finaly the LES method.

Re: 2D incompressible turbulent flow
the physics of 2D turbulence ( e.g. thin films ) is completely different to 3D turbulence. I'd read a little more before going down this investigation route. Your simulations will not capture the inverse cacade of 2D turbuelnce as KE model assumed dissipation which does not occur in 2D turbulence!
Hope this helps! 
All times are GMT 4. The time now is 09:16. 