Taking the rocket wake field and launch platform as the research object,based on the com-putational fluid dynamics method,the finite volume method was used to carry out numerical discretiza-tion,and the mathematical physical model of the rocket wake gas flow field was established for calcula-tion.The interaction between the rocket wake jet and the launch platform was analyzed,the distribu-tion characteristics of parameters such as speed,temperature and pressure of the gas flow field were ex-plored,and the impact effect of the wake gas flow on the launch platform during the launch process was studied,and the surface pressure and temperature variation law of the launch platform were obtained.Subsequently,numerical and experimental simulations were conducted on the surfaces of different ma-terials for comparison.The results showed that after replacing aluminum material with steel material,the surface temperature of the steel was lower than the melting point,which could reduce the tempera-ture influence on the platform.The result provides a theoretical basis for the protection and optimiza-tion of rocket launch platform.
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