 |
 |
 |
|
|
|
[Sponsors] | ||||
October 26, 2005, 07:44
|
Since OpenFOAM seems to implem
|
#1 |
|
Senior Member
Maka Mohu
Join Date: Mar 2009
Posts: 305
Rep Power: 18  |
Since OpenFOAM seems to implement the PISO version that deals with absolute variables instead of fractions of correction, this will require a divergence free initial field (Isaa 86). In the case of turbulent channel flow simulation where initial field is random Gaussian, do I really have to make the field divergence free or I understood something wrong.
Thanks. |
|
|
|
|
|
October 26, 2005, 09:41
|
No, don't bother - the first p
|
#2 |
|
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,907
Rep Power: 33 |
No, don't bother - the first pressure solution will do it for you. If you absolutely insist (e.g. detailed transient), run potentialFoam first.
Enjoy, Hrv
__________________
Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk |
|
|
|
|
|
|
October 26, 2005, 09:52
|
Does this mean that H() includ
|
#3 |
|
Senior Member
Maka Mohu
Join Date: Mar 2009
Posts: 305
Rep Power: 18 |
Does this mean that H() includes d_i (u_i)n (old value) so I do not need to worry about the condition of divergence free?
|
|
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| divergence-free velocity field - 2D problem | pres | FLUENT | 1 | May 31, 2008 13:28 |
| velocity field divergence? | gh | FLUENT | 0 | July 6, 2005 12:10 |
| Divergence Free on the Magnetic Field | Valdemir | Main CFD Forum | 1 | March 19, 2003 19:33 |
| initial field of turbulence | Paul | Main CFD Forum | 1 | May 25, 2002 06:53 |
| Initial turbulent field | Tony Chen | Main CFD Forum | 10 | July 19, 1999 01:52 |
Linear Mode
