CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums

Search Results

Register Blogs Community New Posts Updated Threads Search

Showing results 1 to 6 of 6
Search took 0.00 seconds. Search: Posts Made By: sahas
Forum: OpenFOAM Running, Solving & CFD August 30, 2012, 03:20
Replies: 19
Views: 6,373
Posted By sahas
By the way, inside boundary layer the diffusive...

By the way, inside boundary layer the diffusive term has significant value so I think one should consider also the diffusion Courant number (mu*dt/dx^2) - may be, it is responsible for arising...
Forum: OpenFOAM Running, Solving & CFD August 29, 2012, 11:06
Replies: 19
Views: 6,373
Posted By sahas
Glad to hear good news, Nils :) As I...

Glad to hear good news, Nils :)

As I understand, the "drawback" is a kind of "phantom". Look: when you use Euler scheme you limit the time step corresponding to Courant number 0.4 in some cell...
Forum: OpenFOAM Running, Solving & CFD August 28, 2012, 09:21
Replies: 19
Views: 6,373
Posted By sahas
Also, the result may strongly depend on...

Also, the result may strongly depend on interpolation scheme used. For example, vanLeer sometimes gives oscillations, whereas upwind does not. As well you may try SFCD scheme.
P.S. Of course,...
Forum: OpenFOAM Running, Solving & CFD August 28, 2012, 05:25
Replies: 19
Views: 6,373
Posted By sahas
Hi Nils, what Courant number "maxCo" do you...

Hi Nils,

what Courant number "maxCo" do you use? I found that sometimes there are fluctuations in the fields when Courant number is greater than approximately 0.1.
Forum: OpenFOAM Running, Solving & CFD July 25, 2012, 07:16
Replies: 19
Views: 6,373
Posted By sahas
There are three files in attachment (modified...

There are three files in attachment (modified rhoCentralFoam.C, createFields.H, new setrDeltaT.H).
Below I post diff's

rhoCentralFoam.C

---...
Forum: OpenFOAM Running, Solving & CFD July 23, 2012, 07:21
Replies: 19
Views: 6,373
Posted By sahas
If you are interesting in local time stepping...

If you are interesting in local time stepping (use "pseudo-time") there is some information in the forum about its implementation in rhoCentralFoam. I have done it for rhoCentraFoam2.0, and I can...
Showing results 1 to 6 of 6

 
Forum Jump

All times are GMT -4. The time now is 23:15.

Contact Us - CFD Online - Privacy Statement - Top