Numerical Simulation of Asynchronous Ignition Time Series with Multi-gas Generator

Abstract

Multi-gas generators, multi-sequence ignition and modular charge are effective method to solve general ejection. An integrated CFD simulation model with high-pressure chamber, low-pressure chamber and nozzle is proposed, in which, the mass source term and energy source term are considered in the flow field during the charge combustion. Based on moving-mesh technology, the key problem involved the burning surface and the moving piston is solved. The numerical simulation on integrated CFD simulation model with dual gas generators and asynchronous ignition time series is carried out, and the coupling calculation of charge combustion and the change of the flow field are realized. Simulation results show that the numerical simulation model and method are accurate.