direct numerical simulation of interphase mass transfer in gas–liquid multiphase systems

this paper presents the direct numerical simulation of interphase mass transfer in gas liquid multiphase system. the volume-of-fluid (vof) method in conjunction with mass transfer model has been used. in order to study the process of interphase mass transfer two numerical simulation methods are presented. two common mass transfer mechanisms, diffusion through stagnant film (dtsf) and equi-molal counter diffusion (emcd), are investigated. two benchmarks, the stefan diffusion problem and the diffusion in water and methanol gas–liquid system, have been used to validate the numerical methods. afterwards two proposed numerical solution for different mass transfer mechanisms have been investigated in stratified gas liquid flows between two parallel plates. the results show by different approaches in numerical solution, the accuracy of mass transfer simulation is different.