Experimental Study of the Formation of a Vortex Ring at the Open End of a Cylindrical Shock Tube
Experimental Study of the Formation of a Vortex Ring at the Open End of a Cylindrical Shock Tube
复制标题
圆柱形激波管开口端涡环形成的实验研究
DOI：
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发表时间：
1952
期刊：
影响因子：
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通讯作者：
N. D. Haas
中科院分区：
文献类型：
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作者：
F. Elder;N. D. Haas
以百分之几毫秒的电子控制间隔间隔拍摄的希列伦火花快照显示了激波的出现和在圆柱形激波管末端的涡环的形成，该激波管对大气开放。涡环和激波阵面的轴向位置被绘制为第一毫秒的时间函数，在这段时间内，涡形成并加速到初始平面激波后质量流理论粒子速度的四分之三。涡环直径随时间和距离的增加呈非线性增长。
Schilieren spark snapshots spaced at electronically controlled intervals of several hundredths of a millisecond show the emergence of the shock wave and the formation of the vortex ring at the end of a cylindrical shock tube, open to the atmosphere. The axial positions of the vortex ring and shock front are plotted as a function of time for the first millisecond, in which time the vortex forms and is accelerated to about three‐quarters of the theoretical particle velocity of the mass flow following the initial plane shock. The diameter of the vortex ring increases nonlinearly with time and distance.