|
[Sponsors] |
February 27, 2012, 07:41 |
turbulent Prandtl number
|
#1 |
New Member
Nikolay Vinnichenko
Join Date: Nov 2010
Posts: 14
Rep Power: 15 |
Hello!
I'm trying to verify turbulence models for heat exchange in flat plate boundary layer (air, Re about 10^5). Spalart-Allmaras results are good with conventional constant turbulent Prandtl number 0.9. However, Baldwin-Lomax is better for Pr_turb=1.2. I tried Kays-Crawford variable Pr_turb formula and realized that it is somewhat paradoxical for me: if turbulent viscosity is small, as, I suppose, it is far from the wall, then Pe_turb=0 and Kays-Crawford model gives Pr_turb=2*0.85=1.7 (just as at the wall surface). Is it Ok far from the wall? |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
DecomposePar unequal number of shared faces | maka | OpenFOAM Pre-Processing | 6 | August 12, 2010 10:01 |
[blockMesh] BlockMeshmergePatchPairs | hjasak | OpenFOAM Meshing & Mesh Conversion | 11 | August 15, 2008 08:36 |
Unaligned accesses on IA64 | andre | OpenFOAM | 5 | June 23, 2008 11:37 |
Turbulent Cylinder Strouhal Number | Chetan Kadakia | FLUENT | 3 | October 10, 2002 04:31 |