Nonlocal nature of vortex stretching in an inviscid fluid
作者:
Koji Ohkitani,
Seigo Kishiba,
期刊:
Physics of Fluids
(AIP Available online 1995)
卷期:
Volume 7,
issue 2
页码: 411-421
ISSN:1070-6631
年代: 1995
DOI:10.1063/1.868638
出版商: AIP
数据来源: AIP
摘要:
Three‐dimensional Euler equations are studied numerically and analytically to characterize intense vortex stretching in an inviscid fluid. Emphasis is put on the nonlocal effects stemming from the pressure term. The purpose of this paper is twofold. One is to give numerically a detailed characterization of vortex structures on the basis of previously proposed two eigenvalue problems associated with vorticity. The other is to give some mathematical analyses which highlight the role of the pressure Hessian in vortex dynamics, especially in connection with a possible singularity. Also discussed are the differences in local and global (possible) blowups. The blowup problem is not directly discussed by the present numerics at moderate resolution. ©1995 American Institute of Physics.
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