Implementation of modified-CICSAM algorithm for three dimensional two phase flow

Abstract

This paper describes issues related to implementation of Modified- Compressive Interface Capturing Scheme for Arbitrary Meshes (CICSAM) which bestows the effect of CICSAM and High Resolution Interface Capturing Schemes (HRIC). Among the two, CICSAM has a very good shape preserving characteristics while HRIC is less dependent on cell Courant number. The modified scheme is tested for three-dimensional deformations. The developed algorithm is coupled with a Navier-Stokes flow solver to simulate flows pertaining to high surface-tension. High surface tension problems are difficult to be captured when the surface-tension is treated as an ordinary source term as it tends to generate unphysical velocities. In the present work influence of surface tension is implemented using Balance Force Algorithm along with Continuum Surface Force (CSF) model. The developed algorithm is successfully tested for three-dimensional static bubble test with surface tension co-efficient of seventy three and rise of air bubble in water.