|November 8, 2013, 14:53||
Force coefficient oscillations for small timestep
Join Date: Mar 2012
Posts: 271Rep Power: 7
I'm working with a 3D moving mesh and I've noticed a behaviour in the force coefficients of which I don't know the reason.
The thing is using a time step of 1e-4 s the force coefficients have an oscillating component even though they follow a correct sinusoidal behaviour.
But when I rise the time step to 1e-3 this oscillations disappear.
Why is this happening?
You can view this two behaviours in the picture, before 0.46 s time step is 1e-4 and after this moment it's 1e-3.
|force coefficients, oscillations, time step|
|Thread||Thread Starter||Forum||Replies||Last Post|
|ActuatorDiskExplicitForce in OF2.1. Help||be_inspired||OpenFOAM Programming & Development||8||July 3, 2014 10:54|
|Question about heat transfer coefficient setting for CFX||Anna Tian||CFX||1||June 16, 2013 06:28|
|Force can not converge||colopolo||CFX||13||October 4, 2011 22:03|
|Viscous force and coefficient viscous force||tobino||Main CFD Forum||0||February 20, 2011 22:06|
|Automotive test case||vinz||OpenFOAM Running, Solving & CFD||98||October 27, 2008 09:43|