Reply To: 3D Multiphase filling simulation of microstructure
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regarding the question what multi-component model you should use, I would recommend to look into phase field models with high density ratios. There is a similar model already implemented to OpenLB which is called “Free Energy”, for example used in the Young Laplace or Contact Angle examples, but it does not allow different densities for the two phases which you can find a lot of literature about.
For the loading of the .dat file and the boundary definition you might get another reply by someone else.
Hope this helps.