火药气体声速参量变化研究初探  

Elementary Research on Parameter Change of Propellant Gas Sonic Velocity

作　　者：张明安[1] 李媛[1] 李志飞[1] 高瑞[1] 

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《火炮发射与控制学报》2009年第4期85-88,共4页Journal of Gun Launch & Control

摘　　要：不同条件下火药气体的声速数值具有明显差异,对于描述和仿真内弹道过程具有重要影响。为了掌握声速变化规律,以热力学关系式为基础,推导了非理想气体声速公式,给出了不同火炮内弹道条件下火药气体的声速计算结果,并与在理想气体假设条件下的计算结果进行了对比分析,显示了非理想气体声速计算公式更接近于实际物理过程,对于分析和仿真内弹道过程具有较高的参考价值。The sonic velocity values of propellant gases under different conditions reveal significant difference, which have important influence on process description and simulation of interior ballistics. In order to control the change rules of sonic velocity, based on the relation formula of thermodynamics, the sonic formula of non-ideal gas was deduced, the calculation results of sonic velocity of powder gas under different conditions of gun interior ballistics were presented, and a comparison between the calculation results conducted from the deduced formula and the results conducted under the assumption of ideal gas were performed and analyzed. The results showed that the deduced sonic formula of non-ideal gas is more accurate than the result conducted under the assumption of ideal gas, and it is more appropriate to actual physics process. This method has more important reference for analysis and simulation of interior ballistic process.

关 键 词：流体力学 火药气体 热力学 内弹道 

分 类 号：TJ012.11[兵器科学与技术—兵器发射理论与技术]