Research of flow instability in forced-convection generator

Because of the importance of two-phase instabilities,substantial efforts have been made to understand the physical phenomena governing such instabilities.The purpose of this paper is to present a numerical model for the analysis of flow-induced instabilities in forced-convection steam generator.The model is based on the(assumption) of homogenous two-phase flow and thermodynamic equilibrium of the phase.The thermal capacity of the heater wall has been included in the analysis.The model is used to study the effects of system pressure,flow flux,inlet subcolling,inlet/outlet(restriction),gap size and the ratio of do/di and the ratio of qi/qo on system behavior.