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Pseudo transient simulation in VOF

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Old   December 17, 2015, 11:22
Question Pseudo transient simulation in VOF
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Federico
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Hello guys,
Im currently dealing with a steady - pseudo transient simulation of a 3d case to reach finally the steady state. Im using a VOF model, since there is a free surface.
In the settings (solution control) theres a Courant number related to the volume fraction, which is 200 by default. Is this related with the pseudo time steps?
Im using automatic pseudo timesteps, so im wandering if using a certain value of the volume fraction courant number can influence them, like limiting them or something like that.
Actually ive seen my simulation goes to divergence if I set this courant number higher than 4 (i also had to set the default URF lower).
Any help is appreciated to let me understand better this kind of simulation.
Thanks
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