Bi-Phasic Flow

One of the new ad­di­tions to the solver is the pos­si­bil­i­ty to ap­prox­i­mate two phase flow while pre­serv­ing a sharp in­ter­face even for un­der re­solved prob­lems. This ap­proach will pre­serve sub-grid fea­tures of the in­ter­face in ar­eas where the fi­nite el­e­ment mesh is un­der-re­solved and re­store this fea­ture to the solver lat­er in ar­eas of the mesh with bet­ter res­o­lu­tion.