有限空间中激波运动的数值模拟  

THE NUMERICAL SIMULATION OF SHOCK WAVE MOTION IN CONFINED SPACE

作　　者：乐嘉陵[1] 高铁锁[1] 曹文祥[1] 

机构地区：[1]中国空气动力研究与发展中心,四川锦阳211信箱621000

出　　处：《航空学报》1993年第1期A001-A006,共6页Acta Aeronautica et Astronautica Sinica

摘　　要：采用一种有限体积的TVD格式模拟喷流产生的启动激波在有限空间内的运动过程。计算获得的激波运动过程与激波在大气中传播时的实验结果一致。在传播过程中出现涡环和多次激波。计算表明,在真空箱为正方体的情况下,激波管出口附近的压力脉冲特性主要取决于有限空间的轴向长度。所得结果对毫秒级激波管喷流模拟装置的真空箱设计有参考价值。A kind of finite volume TVD Scheme is used to numerically simulate the motion of shock wave projecting into a confined space. The calculated results are in agreement with experimental ones when the shock wave propagates in atmosphere. Following the shock wave, vortex rings and several shock waves appear in the flow field. Calculation indicates that the characteristics of pressure pulses near the open end of the tube depend mainly on the axial length of the confined space of cubic vacuum tank, which is essential for designing the size of vacuum tank of short duration device for simulating exhaust plume at high altitudes.

关 键 词：激波管 数值模拟 激波反射 

分 类 号：O381[理学—流体力学]