Computational Fluid Dynamics Simulation Method of Fuze Aeroheating Ablation

Theoretical analysis combining experimental method are usually used in traditional research on fuze aeroheating ablation,but it has many disadvantages such as complex computation,low computation speed,narrow limitation,big error in computation result and it can't simulate some extreme experimental condition.Aiming at these problems,the CFD method was introduced to the analysis of fuze aeroheating ablation.Ablation rule and ablation time-step were defined by the method,and the ablated part were moved by the ablation rule after every computation of time slice,and the computation was repeated according to the ablation time step until the whole imitation time was completed.The simulation result of standard rocket fuze on 4 Mach flight velocity for 3 seconds showed that the ablation situation accorded with the theoretical analysis result,so the method was proved to be reasonable.