|September 24, 2012, 03:02||
Error with higher order (2nd, GAMMA) upwind scheme
Join Date: Mar 2009
Posts: 105Rep Power: 8
I changed my solver from central to 1st order upwind scheme and it works fine when my cylinder is stationary.
When I tried using higher order schemes, such as 2nd order upwind or GAMMA, I get divergence and erroneous results.
I 've some questions when using higher order upwind scheme:
1. do i have to use higher resolution to ensure stability/accuracy?
2. are these schemes stable/accurate at low Re e.g. 100?
3. do i have to use smaller time step?
i tried to change the resolution and Re but there's still problems.
Hope someone can help. Tks.
|Thread||Thread Starter||Forum||Replies||Last Post|
|First Order to Higher Order Blending Factor||NormalVector||FLUENT||3||April 3, 2013 15:43|
|applying 2nd order muscl scheme to 2D unstructured(triangle) grid||dokeun||Main CFD Forum||2||May 22, 2012 02:42|
|Differences between serial and parallel runs||carsten||OpenFOAM Bugs||11||September 12, 2008 11:16|
|Higher order downwind scheme||jelmer||OpenFOAM Running, Solving & CFD||4||August 9, 2006 06:43|
|second order FD upwind scheme||Heinz Wilkening||Main CFD Forum||2||November 3, 1998 15:33|