| Experimental study on hysteresis phenomena of shock wave structure in an over-expanded axisymmetric jet
Shigeru Matsuo*, Toshiaki Setoguchi, Junji Nagao, Miah Md. Ashraful Alam and Heuy Dong Kim
The Journal of Mechanical Science and Technology, vol. 25, no. 10, pp.2559-2565, 2011
Abstract : In recent studies on two-dimensional supersonic jets, it is reported that the hysteresis phenomenon for the reflection type of shock
waves in the jet flow field is occurred under the quasi-steady flow condition and this phenomenon is affected by the transitional pressure
ratio between the regular reflection and Mach reflection. However, so far, there are few researches on the hysteresis phenomenon for the
transition of shock waves between regular and Mach reflection in over-expanded supersonic jets and the phenomenon has not been investigated
satisfactorily. Therefore, the purpose of this study is to clarify the hysteresis phenomena for the reflection type of shock wave in
the over-expanded axi-symmetric supersonic jet experimentally, and to discuss the relationship between hysteresis phenomenon and rate
of the change of pressure ratio with time. Furthermore, the effect of Mach number at the nozzle exit on hysteresis loop was investigated
for two kinds of nozzle.
Keyword : Compressible flow; Hysteresis; Over-expanded jet; Shock wave; Supersonic |
