Two-phase nozzle flow

A numerical solution procedure has been developed for solving gas-only one-phase flow or fully coupled, gas-particle two-phase flow in nozzles, especially those of solid fueled rocket motors and magnetohydrodynamic (M H D) power generation system. The time-dependent MacCormack finite difference scheme is applied to solve the governing equations which are derived from two-fluid model. The integral method is also incorporated into this program to treat the turbulent boundary layer effect. In order to achieve numerical stability, time smoothing, fourth order smoothing, linear space extrapolation for particle concentration on the solid wall and using the pseudowall (limiting particle streamline) as a boundary for the application of the MacCormack scheme to particle phase are developed