Numerical calculation and analysis of gun barrel heat transfer

Abstract

With the help of classical interior ballistic model, the thermal environment parameters inside and outside the gun barrel are analyzed and calculated. Then, the finite difference method is used to calculate the heat transfer process of the barrel, and the distribution of the peak temperature and radial temperature field is obtained. The results show that the inner wall temperature increases rapidly at first, and the speed of temperature increase gradually decreases when the inner wall temperature reaches the extreme value, and the speed of temperature decrease gradually. In the case of continuous firing, the temperature does not necessarily decrease monotonically in the radial coordinates of the barrel. Under certain circumstances, one or more extreme points may appear.