Numerical simulation of Marangoni effects of single drops induced by interphase mass transfer in liquid-liquid extraction systems by the level set method

摘要

The mathematical model of mass transfer-induced Marangoni effect is formulated.The drop surface evolution is captured by the level set method,in which the interface is represented by the embedded set of zero level of a scalar distance function defined in the whole computational domain.Numerical simulation of the Marangoni effect induced by interphase mass transfer to/from deformable single drops in unsteady motion in liquid-liquid extraction systems is performed in a Eulerian axisymmetric reference frame.The occurrence and development of the Marangoni effect are simulated,and the results are in good agreement with the classical theoretical analysis and previous simulation.