关键词: 固体推进剂火箭发动机;装药;裂纹;流场仿真;有限元法

Abstract: Crack combustion flow field in solid propellant was analyzed using two-dimension model of the gas flow along the crack coupled with a simplified ignition model Control equations were solved with finite element method (FEM) under unstructured grid Effects of pressurization rate and crack geometry on the flame propagation and pressure distribution in crack were studied Numerical simulation indicates that the velocity of flame propagation in crack and the pressure at the crack tip increase as the pressurization rate increases and the crack width decreases

Key words: Solid propellant rocket engine;Charge;Crack;Flow field simulation;Finite element method