Hysteretic phenomenon of shock wave in a supersonic nozzle
Hysteretic phenomenon of shock wave in a supersonic nozzle
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DOI：
10.1007/s11630-010-0419-4
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发表时间：
2010-12
影响因子：
2.5
通讯作者：
T. Setoguchi;S. Matsuo;M. A. Ashraful Alam;J. Nagao;H. Kim
中科院分区：
文献类型：
--
作者：
T. Setoguchi;S. Matsuo;M. A. Ashraful Alam;J. Nagao;H. Kim
近年来，流体流动系统中的迟滞现象因其在工业和工程中的广泛应用而引起人们的关注。当高压气体从喷嘴出口排放到大气中时，在特定条件下形成带有马赫盘的膨胀超音速射流。在二维膨胀超音速射流中，准定常流动条件下会出现反射型激波的滞后现象，而规则反射与马赫反射之间的过渡压比受此影响。然而，到目前为止，对超音速内部流动中激波的滞回现象的研究还很少，对这一现象的研究也不是很理想。本文对超音速喷管中冲击波的滞后现象进行了实验和数值研究，并讨论了滞后现象与压比随时间变化速率的关系。
In recent years, hysteretic phenomena in fluid flow systems drew attention for their great variety of industrial and engineering applications. When the high-pressure gas is exhausted to atmosphere from the nozzle exit, the expanded supersonic jet with the Mach disk is formed at a specific condition. In two-dimensional expanded supersonic jet, the hysteresis phenomenon for the reflection type of shock wave is occurred under the quasi-steady flow and the transitional pressure ratio between the regular reflection and Mach reflection is affected by this phenomenon. However, so far, there are very few researches for the hysteretic phenomenon of shock wave in a supersonic internal flow and the phenomenon has not been investigated satisfactorily. The present study was concerned with the experimental and numerical investigations of hysteretic phenomena of shock wave in a supersonic nozzle, and discussed the relationship between hysteresis phenomenon and rate of the change of pressure ratio with time.