Abstract
Two-phase bubble flow in a rectangular channel is numerically simulated by computing solutions to the Navier-Stokes equations for two-phase flow. The deforming boundary separating gas and liquid is numerically modeled using the coupled level-set/volume-of-fluid method (CLSVOF) (Sussman and Puckett, 2000). In this work, we confine ourselves to two-dimensional computations in a rectangular domain. Even two-dimensional computations allow one to predict two-phase bubble flows in a rectangular channel. It is shown that our computational results corroborate the work presented by Coleman and Garimella (1999) in which they report that the transition region to dispersed flow in a rectangular channel shifts to a smaller condition of USL compared with the transition region for the case of a round pipe.
