(Direct link to animation left) (Direct link to animation middle) (Direct link to animation right)

Two immiscible fluids are simulated without (left) and with (middle) surfactants added. Without surfactants the two bubbles quickly coalesce, but with surfactants they bounce off. The concentration of surfactants is the largest at the interface, as is investigated in the rightmost animation.

The modeling and the numerical method is described in S. Engblom, M. Do-Quang, G. Amberg, and A-K. Tornberg: On diffuse interface modeling and simulation of surfactants in two-phase fluid flow, in Commun. Comput. Phys. 14(4):879--915, 2013: (doi).

Stefan Engblom
Last modified: Fri Jul 31 16:53:56 MEST 2013