# turbulence wall law on unstructred mesh

 Register Blogs Members List Search Today's Posts Mark Forums Read

 March 13, 2002, 03:01 turbulence wall law on unstructred mesh #1 Quain Tchew Guest   Posts: n/a I'm developing a code computing 3D compressible turbulence flow on unstructured mesh. I don't want to make many hexahedrons near the wall, for this method requires enormous computing. I want to implement wall law on tetrahedron mesh. I know I must calculate y+ and u+ of the near wall Control Volume(CV), and then according the y+, use different function calculate turbulence viscidity. But which CV should I calculate? Some CV have a face on the wall, some have a edge on the wall, and some have a vertex on the wall. How to calculate the turbulence stress resulted from the wall, k and e in the near wall CV? Should I integrate in a tetrahedron?

 March 14, 2002, 06:29 Re: turbulence wall law on unstructred mesh #2 Bart Prast Guest   Posts: n/a That's why most codes use prisms at the wall.

 March 18, 2002, 21:03 Re: turbulence wall law on unstructred mesh #3 Quain Tchew Guest   Posts: n/a I see. But how can I generate prisms at the wall? can Gambit or gridgen do it? If I have to progame to implement it, where can I find some article about it? Thanks

 March 19, 2002, 17:14 Re: turbulence wall law on unstructred mesh #4 Astrid Guest   Posts: n/a Gambit can do it, definitely. Astrid

 March 20, 2002, 10:50 Re: prism grid generation #5 Pete Guest   Posts: n/a Gridgen can generate layers of prism cells as well.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Althea FLUENT 22 January 4, 2017 04:19 Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20 Attesz CFX 7 January 5, 2013 04:32 lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09

All times are GMT -4. The time now is 00:02.