|May 2, 2003, 03:59||
continuity equation for the mixture
I posted this message some time ago on fluent forum but i´ve got no responce. So i´ll try my luck here...
I´m dealind with cavitation problem with so called mixture model. It´s very simmilar to VOf model. Anyway the problem is with continuity equation with the mixture.
It´s equation 20.3.1 in fluent manual. index m means mixture (all the parameters of each phase - like velocity and density are averaged to a single mixture phase).The question is how can there be mass transfer between phases inluded in this equation if it´s averaged for the mixture????
The other equation is volume fraction equation for secondary phase (20.3.15) To get the void fraction of each phase in a cell fluent solves this equation:
where alpha_k is the volume fraction of k-th phase. - shouldn´t mass transfer be included here????
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