Evolution of single elliptic vortex rings

被引：0
|
作者：
Zhao, Y
Shi, XG
机构：
来源：
ACTA MECHANICA SINICA | 1997年 / 13卷 / 01期
关键词：
elliptic vortex ring; pseudo-spectral method; bifurcation; vortex reconnection;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The evolution of single elliptic vortex rings for initial aspect ratio (AR) = 2,4,6 has been studied. The incompressible Navier-Stokes equations are solved by a dealiased pseudo-spectral method with 64(3) grid points in a periodic cube. We find that there are three kinds of vortex motion as AR increases and bifurcation occurs at certain AR. The processes of advection, interaction and decay of vortex ring are discussed. Numerical results coincide with experiments and other authors' numerical simulation.
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页码：17 / 25
页数：9
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