摘要
采用三维离散涡方法对不可压矩形射流场进行了数值模拟 ,结果发现与圆射流不同的是 ,即使在不加扰动的情况下 ,封闭涡丝也极不稳定 ,不再呈现矩形 ,而是波浪形 ,并有流向涡产生 .矩形涡丝失稳和演变的程度都比圆形涡环的情形更快 。
In this paper, the three\|dimensional vortex method is employed to simulate an incompressible rectangular jet. The results show that rectangular jet is different from circular jet. The vortex filaments are unstable extremely even though no disturbance be exerted on the vortex filaments. The vortex filaments are not in the form of rectangular but wavy, and longitudinal vortices appear. The rectangular vortex filaments become unsteady and evolve quicker than the circular vortex filaments. The results given in this paper are helpful for jet control. \;
出处
《浙江科技学院学报》
CAS
2000年第B10期16-20,共5页
Journal of Zhejiang University of Science and Technology
基金
教育部跨世纪优秀人才培养计划基金资助项目
关键词
矩形射流
涡结构
三维涡方法
数值模拟
rectangular jet
vortex structures
three-dimensional votrex method
numerical simulation
