摘要
本文提出了一种采用间歇涡环模型描述射流流场的大尺度流动结构特性，并依据边界元方法优化设计风琴管等自激振荡型喷管的内流结构曲面和其喉部结构的数值实验方法。计算结果表明内流过渡曲面为棉球面而出口形状为锥面的风琴管式喷嘴喷射出的圆形射流流场具有良好的大尺度涡环结构。
Numerical simulation of the axisymmetric jet flowfield structure is made with boundary element method by replacing the shear layer with discrete vortex rings and the nozzle boundary with vortex layer with some elementary flow,optimizing the nozzle configuration.The computation results show that jet emanating from the nozzle with elliptic contour and conic exit contour has a well-organized large scale vortex structure.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1995年第5期474-478,共5页
Chinese Journal of Hydrodynamics
基金
博士点基金
关键词
射流流场
流动结构
涡环
大尺度结构
气蚀
jet flow field
flow structure
vortex ring, large-scale structure
nozzle
