火炮发射药非稳态温度场的实验与数值计算

Experiment and Numerical Calculation of 2D Axisymmetric Unsteady Temperature Field for Gun Propellant

文中介绍了多层壁面有限长圆柱两维轴对称非稳态温度场的实验测定与数值模拟,利用热电偶测量了药粒的温度,采用控制容积法推导了数值模拟时使用的有限差分格式,并在计算机上进行了数值模拟。计算结果表明,数值解与实验值基本一致,从而为发射药实时平均温度的确定奠定了基础。

This paper discusses the experimental measurement and numerical calculation of 2D axisymmetric unsteady temperature field in the finite length cylinder with multi-layer wall,uses thermocouples to measure the temperature of grains bed.Theoretically,the finite-difference forms are deduced using volume equilibrium method for numerical simulation.The results show that the numerical solution is fundamentally consistent with experimental values and are based on the synchronous determination of average temperature...