 |
 |
 |
|
|
|
[Sponsors] | ||||
May 16, 2009, 13:39
|
Initial values of K-Epsilon.
|
#1 |
|
New Member
Manish
Join Date: Apr 2009
Posts: 3
Rep Power: 17  |
I am doing with a 3-d turbulent unsteady air-hydrogen mixing flow in a closed vessel with energy equation off using a volume weighted density performance. I am using K-epsilon model with turbulent length scale as 7% of hydraulic dia. instead i want to use k & Epsilon values. how can I calculate it.
|
|
|
|
|
|
June 1, 2009, 22:33
|
|
#2 |
|
New Member
Manish
Join Date: Apr 2009
Posts: 3
Rep Power: 17 |
Anybody.........
help me out......... |
|
|
|
|
|
|
June 3, 2009, 07:23
|
how to calculate k & epsilon values
|
#3 | |
|
New Member
amira maizi
Join Date: Mar 2009
Posts: 8
Rep Power: 17 |
Quote:
\epsilon= \frac{k^{3/2}}{0.5*d} d is the hydraulic diameter of the face boundary [IMG]file:///C:/DOCUME%7E1/douba/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image002.gif[/IMG] [IMG]file:///C:/DOCUME%7E1/douba/LOCALS%7E1/Temp/msohtmlclip1/01/clip_image002.gif[/IMG] |
||
|
|
|
||
|
June 3, 2009, 09:48
|
|
#4 |
|
New Member
Manish
Join Date: Apr 2009
Posts: 3
Rep Power: 17 |
thanks, the problem I was facing was due to low inlet velocity model overpridicted turbulence and hence diffusio, now I have tried with K/100 and epsilon/100 values. results hv improved.
|
|
|
|
|
|
 |
|
|
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 |
| Moving mesh | Niklas Wikstrom (Wikstrom) | OpenFOAM Running, Solving & CFD | 122 | June 15, 2014 06:20 |
| SimpleFoam k and epsilon bounded | nedved | OpenFOAM Running, Solving & CFD | 1 | November 25, 2008 20:21 |
| Differences between serial and parallel runs | carsten | OpenFOAM Bugs | 11 | September 12, 2008 11:16 |
| Unknown error | sivakumar | OpenFOAM Pre-Processing | 9 | September 9, 2008 12:53 |
Linear Mode
