理想气体球面强冲击波一般自模拟运动模型  

General self-simulating motion mode of spherical strong shock waves in ideal gas

作　　者：卞保民[1] 杨玲[1] 张平[1] 纪运景[1] 李振华[1] 倪晓武[1] 

机构地区：[1]南京理工大学信息物理与工程系,南京210094

出　　处：《物理学报》2006年第8期4181-4187,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60378003)资助的课题.~~

摘　　要：应用理想气体一维不定常流自模拟运动基本微分方程,详细讨论了球面强冲击波波后气体自模拟特性,推导出具有自模拟运动特性的球面强冲击波传播公式的一般形式.分析结果表明:球面强冲击波自模拟运动模型不必从具有奇异性质的点源出发,冲击波初始速度和自模拟温度函数解一般不存在趋于无穷大的问题.Taylor点爆炸冲击波自模拟模型只是一般自模拟模型中假设自模拟运动总能量为定值条件下的特例.Adopting basic-differential equations for self-simulating motion of one-dimensional nonstable flow in ideal gas, the self- simulating characteristics of wave-rear gas in spherical strong shock wave have been analyzed in detail. Additionally, the general form of propagation formula for the spherical strong shock wave, owning self-simulating motion characteristics, is deduced out. Study indicates that the self-simulating motion mode of spherical strong shock wave need not start from a point having irregularity, and the initial shock velocity and self-simulating temperature function, generally, do not exist the problem of driving to infinite. And, Taylor＇ s self-simulating mode of the shock wave from point explosion is a special case of the general self-simulating mode with the assumption that the whole energy of the self-simulating motion is a definite value.

关 键 词：理想气体 球面强冲击波 自模拟运动 

分 类 号：O382[理学—流体力学]