Hysteretic Phenomenon of Shock Wave in a Supersonic Nozzle

• Published in: Journal of thermal science Vol. 19; no. 6; pp. 526 - 532
• Main Authors: Setoguchi, Toshiaki, Matsuo, Shigeru, Ashraful Alam, M. M., Nagao, Junji, Kim, Heuy Dong
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01-12-2010
• Subjects: Classical and Continuum Physics; Engineering Fluid Dynamics; Engineering Thermodynamics; Heat and Mass Transfer; Physics; Physics and Astronomy; 冲击波; 气体排放; 流体流动系统; 超音速喷嘴; 超音速喷管; 迟滞现象; 马赫反射; shock wave; internal flow; compressible flow; supersonic nozzle; hysteresis
• ISSN: 1003-2169; 1993-033X
• DOI: 10.1007/s11630-010-0419-4

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 phe- nomenon. 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 concemed 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.