[steph79]

Hi,

I'm currently studying a solidification/melting problem using Fluent in which there's an incoming crossflow which fills and then solidifies in a partially blocked hole normal to the freestream. There are two incoming phases in the flow field either side of a dividing plate, one being the liquid-solid material from the fluent database and the other being air. Once transited, the phases exit discretely through their own respective pressure outlets, only interacting with each other through the hole.

Unfortunately with this configuration I encounter significant levels of reversed flow on the pressure outlets. I've tried the usual remedies such as extending the displacement of the domain extremities, relative to the hole, but I can't seem to make the problem disappear. I also simulate wall adhesion in this problem with non-right angles specified.

My questions directed towards more experienced users of melting/solidification models;

Is reversed flow typical with the combination of pressure outlets and melting/solidification?
Do you have suggestions for alternative boundary conditions or solver variables?

Thanks for your help in advance.