|
[Sponsors] |
November 4, 2009, 10:59 |
how can I speed up unsteady simulation
|
#1 |
New Member
Avinash
Join Date: Nov 2009
Posts: 2
Rep Power: 0 |
Dear all,
My unsteady flow simulation taking around 2 months to converged the solution. How can I reduced CPU time for unsteady problem? Thanks. |
|
November 4, 2009, 14:05 |
|
#2 |
Member
Ivan
Join Date: May 2009
Posts: 85
Rep Power: 17 |
how big is the grid?
just my two cents, try * use smaller grid solution to initialize the big grid. (search "interpolation file" in manual) * use biger time steps to develop the flow for a while, then switch to smaller time step. * use parallel computation. * use implicit solver |
|
November 6, 2009, 02:33 |
thanks ivanbuz.
|
#3 |
New Member
Avinash
Join Date: Nov 2009
Posts: 2
Rep Power: 0 |
thanks ivanbuz.
|
|
Tags |
convergence, laminar, unsteady |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Unsteady vs Steady simulation - any difference? | Sally | Main CFD Forum | 16 | December 16, 2005 10:15 |
low speed compressible two phase flow?? | cat | CFX | 0 | November 15, 2005 08:59 |
unsteady simulation airfoil | ramin | FLUENT | 8 | September 14, 2005 20:56 |
Procedure to run unsteady simulation? | STN | Main CFD Forum | 2 | February 16, 2002 05:37 |
1D simulation of unsteady gas flows in pipelines | Andrew Chernousov | Main CFD Forum | 1 | September 5, 1998 00:42 |