涡重联过程中背景涡量增长的机制研究

计算物理 ›› 1998, Vol. 15 ›› Issue (4): 403-408.

涡重联过程中背景涡量增长的机制研究

王为国¹, 是长春², 陈耀松²

1. 中国科学院力学研究所, 北京 100080;
2. 北京大学力学与工程科学系 100871

收稿日期:1997-03-19 修回日期:1998-03-13 出版日期:1998-07-25 发布日期:1998-07-25
作者简介:王为国,男,34,副研究员,博士,中国石化咨询公司全国压力容器标准化技术委员会

THE STUDY OF MECHANISM FOR THE AMPLIFICATION OF BACKGROUND VORTICITY IN VORTEX RECONNECTION

Wang Weiguo¹, Shi Changchun², Chen Yaosong²

1. Institute of Mechanics, Chinese Academy of Science, Beijing 100080;
2. Peking University, Department of Mechanics, Beijing 100871

Received:1997-03-19 Revised:1998-03-13 Online:1998-07-25 Published:1998-07-25

摘要/Abstract

摘要： 采用拟谱方法求解N-S方程,直接模拟了两个反向平行涡管的重联过程,考察了各种扰动方式对涡重联的影响,发现了"弧形涡带"现象,着重分析了背景涡量增长的物理机制。

关键词: 拟谱方法, 涡重联, 弧形涡带, 背景涡量

Abstract: By direct numerical simulation of Navier-Stokes equations the reconnection of two anti-parallel vortex tubes has been studied in terms of the pseudo-spectral method.The influence of different disturbances for initial vortex tubes on reconnection is observed. "Curved vortex belts" are found,and the physical mechanism for the amplification of background vorticity is also investigated.

Key words: pseudo-spectral method, vortex reconnection, curved vortex belts, background vorticity

中图分类号:

V211

王为国, 是长春, 陈耀松. 涡重联过程中背景涡量增长的机制研究[J]. 计算物理, 1998, 15(4): 403-408.

Wang Weiguo, Shi Changchun, Chen Yaosong. THE STUDY OF MECHANISM FOR THE AMPLIFICATION OF BACKGROUND VORTICITY IN VORTEX RECONNECTION[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1998, 15(4): 403-408.