实验流体力学

Impulse combustion wind tunnel and its application in rocket and scramjet research

LE Jia-ling, LIU Wei-xiong, HE Wei, TAN Yu, BAI Han-chen

2005, 19(1): 1-10. doi: 10.3969/j.issn.1672-9897.2005.01.001

Abstract(91) PDF(6)

Abstract:

Unsteadiness of shock-wave/boundary-layer interactions induced by unswept and sweptback ramps

HU Cheng-hang, JIANG Wei-min, HUANG Xu-hui, ZHOU Wen-jun, XU Lai-wu

2005, 19(1): 11-16. doi: 10.3969/j.issn.1672-9897.2005.01.002

Abstract(147) PDF(8)

Abstract:
The paper presents the results of an experimental investigation on the unsteadiness of shock-wave/boundary layer interactions generated by ten ramps with streamwise angles of 15, 20 and 24 deg. and sweptback angles of 0, 20, 40 and 60 deg. respectively at Mach numbers of 2.011, 2.504 and 3.015. The results show that: (a) The interactions are cylindrical for all unswept and most of the 20 deg. sweptback interactions and quasi-conical for highly sweptback interactions. The decrease of Mach number or the increase of sweptback angle is favorable for the changeover from cylindrical to quasi-conical interaction. (b) The pressure fluctuations in the intermittent region show sharp low-frequency peak. The peak decreases with increasing sweptback or decreasing streamwise angle. However, with the increase of Mach number, the peaks decrease in cylindrical interactions but slightly increase in quasi-conical interactions. The average shock strength is a governing parameter in quasi-conical interaction.

Influence of nonlinear gas oscillations on rectangular wings

SUN Jian-hong, LI Qi-chang, LIU Jun-zhi

2005, 19(1): 17-21,34. doi: 10.3969/j.issn.1672-9897.2005.01.003

Abstract(95) PDF(2)

Abstract:

Instantaneous investigation of gas-solid two-phase free jet flow

YANG Ren-gang, ZHANG Dong-dong, HE Feng, XU Hong-qing

2005, 19(1): 22-25. doi: 10.3969/j.issn.1672-9897.2005.01.004

Abstract(105) PDF(2)

Abstract:

Experimental study on differential-resistance model in multiphase flow metering

LIN Jun, DONG Shou-ping, Huang Hui