EVOLUTION OF SINGLE ELLIPTIC VORTEX RINGS

被引：0
|
作者：
Zhao Yao Shi Xungang Department of Mechanics and Engineering SciencePeking UniversityThe State Key Laboratory for Turbulence ResearchBeijing China [100871 ]
机构：
来源：
Acta Mechanica Sinica | 1997年 / 13卷 / 01期
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中图分类号：
O357.1 [不可压缩粘性流体力学];
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摘要：
<正> The evolution of single elliptic vortex rings for initial aspect ratio(AR)=2,4,6 has been studied.The incompressible Navier-Stokes equations are solvedby a dealiased pseudo-spectral method with 64～3 grid points in a periodic cube.Wefind that there are three kinds of vortex motion as AR increases and bifurcationoccurs at certain AR.The processes of advection,interaction and decay of vortexring 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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