激波管中非平衡可凝结流的流动分析  

Analysis of Non-equilibrium Condensative Flow in a Shock Tube

作　　者：赵家权[1] 刘培启[1] 刘凤霞[1] 赵文静[1] 王亮 胡大鹏[1] 

机构地区：[1]大连理工大学化工机械系,辽宁大连116023 [2]中油辽河工程有限公司,辽宁盘锦124010

出　　处：《计算物理》2012年第5期707-712,共6页Chinese Journal of Computational Physics

基　　金：辽宁省教育厅科技研究项目(LS2010043);中央高校基本科研业务费(852002)资助项目

摘　　要：理论推导激波管中相变加热的临界加热量,得到一个显式计算临界加热量公式.该式可广泛用于湿蒸汽或纯蒸汽相变加热流动计算.结果表明,考虑相变加热的临界加热量要大于外部加热的临界加热量;热壅塞时会产生一道向上游传播的凝结激波,且凝结激波位置在液相质量分率开始增长点之前.采用AUSM格式数值求解激波管中湿空气的凝结流动,理论预测与数值计算吻合良好.An explicit equation for critical quantity of heat in condensing flow in a shock tube was derived. The equation is of general validity and applies to vapor flow with or without carrier gas. It shows that critical quantity of heat in internal heat flow for phase change is greater than external heat flow. As flow is choked thermally, a shock wave is generated and propagates upstream. A location where local static pressure begins to rises, which has long been regarded as onset of unsteady condensation in a steady supersonic nozzle, is not acceptable in shock tube flow. It is before the zone of condensation. Furthermore, a second-order AUSM scheme is applied to two- dimensional compressible flow with condensation. Computation results reproduce integral predictions well.

关 键 词：凝结 非定常 激波管 湿空气 

分 类 号：O354[理学—流体力学]