|July 28, 2013, 01:50||
Time step size in VOF implicit
Join Date: Jan 2013
Posts: 177Rep Power: 4
I am new user in CFD.
I am modeling in VOF multiphase. In vof panel with activating the implicit, the courant number is deactive.
In this case, how can i define Time step size?
|July 28, 2013, 16:00||
Join Date: Sep 2011
Posts: 73Rep Power: 5
There is an universal equation in the users guide. In order to calculate your iteration to the timestep.
In my eyes you could test 3 cases (like 0,1 sec; 0,01 and 0,001). The residuals should give a first hint, if a time step size fits or not.
A general answer for your case isn't that easy. Maybe test 3 step sizes?
Here a discussion (maybe helpfull): Time step size and max iterations per time step
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