【摘要】 本文用柱坐标下的有限差分法对喷管出口附近轴对称旋拧射流的动力学特征进行了直接数值模拟，分析了流场涡结构的演化，并讨论了旋拧增强混合的机制。更多还原

【Abstract】 A finite difference scheme in cylinderical coordinate is applied to investigate the dynamic characteristics of swirling jets near the outlet of a nozzle. The evolution of the vortical structures are anaiysed in this paper, and the obtained results are used to discuss the mechanism of swirl-enhanced mixing.更多还原