Zero Mach Number Diphasic Equations for the Simulation of Water-Vapor High Pressure Flows

摘要

A new set of equations to model two-phase water-vapor high pressure flows in cooling pipes heat exchangers of nuclear powerplants at low mach number (between 0.001 and 0.1) is proposed. These equations ― namely the Zero Mach Number Diphasic equations (ZMND equations) ― are similar to the Zero Mach Number Combustion equations. Simulations of temperature relaxation phenomena at low Mach number for two immiscible perfect gases are proposed to validate in monodimensional geometry this model without phase change.