|
[Sponsors] |
Oscillations near wall for wall function grid |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 28, 2016, 12:49 |
Oscillations near wall for wall function grid
|
#1 |
Senior Member
khedar
Join Date: Oct 2016
Posts: 111
Rep Power: 9 |
Dear all,
I am trying to solve a simple channel flow using buoyantSimpleFoam solver. my RAS model is compressible::BSL_EARSM similar to what is implemented in CFX. When I simulated the flow using (y+ ~ 1) mesh without the wall functions, everything was okay. The problem comes when I use wall function mesh (y+ ~ 35). When I look the results, I see large fluctuations in the Ux,Uy and Uz near the wall. After a few cells this fluctuations die down. I have observed similar fluctuations when using the kOmegaSST model but with very low magnitude. I am unable to find the reason for such high magnitudes. It would be really helpful if someone can help me out. Thanks, khedar |
|
November 28, 2016, 12:50 |
contd.
|
#2 |
Senior Member
khedar
Join Date: Oct 2016
Posts: 111
Rep Power: 9 |
||
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
whats the cause of error? | immortality | OpenFOAM Running, Solving & CFD | 13 | March 24, 2021 08:15 |
Enhanced Wall Treatment | paduchev | FLUENT | 24 | January 8, 2018 12:55 |
Radiation interface | hinca | CFX | 15 | January 26, 2014 18:11 |
wall function and grid | Y | FLUENT | 3 | March 17, 2005 07:48 |
Combustion Convergence problems | Art Stretton | Phoenics | 5 | April 2, 2002 06:59 |