Mathematical modeling of thermal loading of an artillery gun barrel during firing

Abstract

The article provides a solution to the problem of thermal conductivity of the barrel of an artillery piece in the process of firing a burst. One-dimensional and two-dimensional mathematical models are considered, taking into account the rifling in the barrel. An approach is given that allows taking into account the rifling of the barrel by introducing artificial roughness. The main characteristics of a 30 mm artillery piece and the thermophysical properties of the material are presented. The thermal loading of the barrel from the solution of the problem of internal ballistics in the thermodynamic formulation is determined. The comparison of the barrel temperature plots in the longitudinal and radial directions is carried out, it is shown that the solution for the one-dimensional model coincides with the solution for the two-dimensional one. The thickness of the warmed-up trunk layer is determined. Studies have shown that for rifled artillery pieces, it is necessary to take into account rifling when solving the problem of thermal conductivity.