|March 15, 2013, 07:45||
Join Date: Jan 2012
Posts: 25Rep Power: 3
I do simulation for flow around building and it includes unsteady conditions that I use implicit unsteady . My question is what the limit for the time step, and can we take it as big as 1 hour ?
Thanks in advance
|March 21, 2013, 19:09||
Join Date: Oct 2009
Posts: 638Rep Power: 11
Short answer: No, you can't make it as big as 1 hour when you want go get a reasonable result.
I can't tell you about the limit since it depends of the mesh and the physics. Try to keep the CFL number below 1 for physical results.
We do three types of jobs here:
GOOD, FAST AND CHEAP
You may choose any two!
|Thread||Thread Starter||Forum||Replies||Last Post|
|Hydrostatic Pressure and Gravity||miliante||OpenFOAM Running, Solving & CFD||132||October 7, 2012 23:50|
|High Courant Number @ icoFoam||Artex85||OpenFOAM Running, Solving & CFD||9||January 3, 2012 09:06|
|Full pipe 3D using icoFoam||cyberbrain||OpenFOAM||4||March 16, 2011 11:20|
|calculation diverge after continue to run||zhajingjing||OpenFOAM||0||April 28, 2010 05:35|
|Superlinear speedup in OpenFOAM 13||msrinath80||OpenFOAM Running, Solving & CFD||17||August 22, 2009 04:59|