Simulation of Boiling in a Vertical Channel Using Ensemble Average Model

Abstract

Simulation of turbulence boiling, generation of vapour and predication of its behaviour are still subject to debate in the two-phase flow area and they receive a high level of worldwide attention. In this study, a new arrangement of the three dimensional governing equations for turbulence two-phase flow with heat and mass transfer are derived by using ensemble averaging two-fluid model and utilizing the latest approved constitutive equations. Then, the governing equations are simplified for bulk boiling in a vertical channel. A computer program with SIMPLE algorithm is written for the simplified equations, and the results are compared with available experimental data and a boiling water reactor in operating condition.