Numerical simulation and analysis on W-type silo launching environment

In order to investigate silo launching environment for the missile, the flow field during launching was numerically simulated by means of computational fluid dynamics (CFD) method. Through comparison of simulated results and experimental results, accuracy of computational model and numerical method was verified. The change of computational zones in flow field with moving process of the missile was treated by means of dynamic mesh technology. The simulation results show that the gas flow includes three stages, ies reflection, injection and full development, resulting in large change of the launching environmental parameters. The change law of pressure and temperature parameter was analyzed. The numerical calculation method and results can be used for design, optimization and improvement of the launching silo.