Analytical and Numerical Calculations of the Heat Transfer Between Propellant Gas and Closed Vessel

摘要

To explore the heat transfer rules between propellant gas and closed vessel,an unsteady one-dimensional semi-infinite heat transfer model is developed.The whole experiment process is divided into two stages as propellant burning and gas cooling.The gas pressure should be taken into account while calculating the heat transfer in the process of propellant burning.After the burning has finished,the heat transfer has great impact on gas temperature,and the effects of radiation heat transfer should be considered.Based on the relationship between gas energy and pressure,the heat loss and pressure changed rules is simulated.The result shows that this model can satisfactorily describe the law of heat transfer in propellant combustion performance test process.