Effects of Surface Tension on Two-Dimensional Two-Phase Stratified Flows

摘要

The effect of surface tension on a stratified two-phase flow between parallel plates is investigated using the LSET method with a recently proposed LMC scheme. The surface tension term is modeled using the CSF model. The results from the present Note agree well with the results obtained using the VOF method. It is found that surface tension effect is confined to the developing region where the interface curvature is nonzero. The entry length increases with the coefficient of surface tension. However, the interface location and velocity profile in the fully developed region are independent of surface tension.