|December 1, 2013, 10:59||
controlling timestep decrease
Join Date: Mar 2010
Posts: 44Rep Power: 8
I'm running unsteady simulations for which there's a long, uninteresting transient behavior, and then the final 10-20% are relevant. This is due to wake development and convection.
For the initial transient part I run at a timestep approximately 10 times larger than the appropriate one. Then I reduce it at the very end when the wake is formed.
My question is : is there a way to have that timestep reduced automatically while the computation runs, by changing it with a python script or whatever in the controlDict, after a predefined computation time ?
Courant-controlled timestep is useless here, and I do not want to go through a restart (this is what I'm doing right now and I'd like to change that.)
|Thread||Thread Starter||Forum||Replies||Last Post|
|Modifying sonicFoam to run with variable timestep - strange results||dalaron||OpenFOAM Programming & Development||1||September 2, 2013 07:21|
|Restart 2-way FSI with different timestep?||Lance||CFX||11||April 17, 2013 00:37|
|Timestep and Pressure Correction Relationship in SIMPLE||rks171||Main CFD Forum||23||May 4, 2012 01:04|
|Adequate timestep selection for multidomain problem||gerardosrez||CFX||6||November 28, 2010 18:50|
|Use of Timestep in obtaining solution.||hagupta||CFX||7||February 28, 2006 14:14|