STUDY ON EXPANSION PROCESS AND INTERACTION OF HIGH SPEED TWIN COMBUSTION-GAS JETS IN LIQUID
The expansion process and interaction of high-speed twin combustion-gas jets in liquid are studied by means of high speed digital camera system. The influence of nozzle diameter, dual-orifice interval, jet pressure and chamber structure on jet expansion shape is discussed. The results indicate that a larger ratio of diameter-to-length can suppress the jet instability in stepped-wall chambers. Higher axial expansion velocity is found under the larger injection pressure, which increases the instability of jet expansion process. Compared with a rectangular chamber, the axial expansion velocity is smaller and radial expansion velocity is larger in stepped-wall chambers under the same conditions. The theoretical studies of interaction of the gas jet with liquid were developed based on the experiment. Two-dimension unsteady models are used to get the pressure, density and the velocity contours. The numerical simulation results coincide well with the experiment.
YU Yong-gang YAN Shan-heng ZHAO Na LU Xin ZHOU Yan-huang
Department of Power Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
53-57
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）