|
[Sponsors] |
April 13, 2011, 12:07 |
initial conditions of Ghia (driven cavity)
|
#1 |
Senior Member
Hassan
Join Date: Apr 2009
Posts: 106
Rep Power: 17 |
What values Ghia et al. used in their driven cavity test problem...
density? viscosity? and velocity on the upper wall??? regards |
|
April 13, 2011, 14:26 |
|
#2 |
Senior Member
Andrew
Join Date: Mar 2009
Location: Washington, DC
Posts: 209
Rep Power: 18 |
I think I used water when I tried to verify Ghia's work. I got really close. But, as for the velocity you should non-dimensionalize everything. Then, for the lid V= 1.
|
|
April 13, 2011, 15:19 |
|
#3 |
New Member
|
I would non-dimensionalize everything first then dimensionalize them with respect to the Reynolds number used. Or assume a characteristic length of 20cm, nu = 10^(-3) m^2/s, and U_lid = 2 m/s. Those were the conditions we used for her project. Its funny when I saw this thread because K. Ghia is my advisor.
|
|
April 13, 2011, 15:25 |
|
#4 |
Senior Member
Andrew
Join Date: Mar 2009
Location: Washington, DC
Posts: 209
Rep Power: 18 |
I think I did mine using the stream-function/vorticity..this was a few years ago, so I can't be 100% sure.
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
SimpleFoam k and epsilon bounded | nedved | OpenFOAM Running, Solving & CFD | 16 | March 4, 2017 08:30 |
SLTS+rhoPisoFoam: what is rDeltaT??? | nileshjrane | OpenFOAM Running, Solving & CFD | 4 | February 25, 2013 04:13 |
SimpleFoam k and epsilon bounded | nedved | OpenFOAM Running, Solving & CFD | 1 | November 25, 2008 20:21 |
Negative value of k causing simulation to stop | velan | OpenFOAM Running, Solving & CFD | 1 | October 17, 2008 05:36 |
Unknown error | sivakumar | OpenFOAM Pre-Processing | 9 | September 9, 2008 12:53 |