Direct measurements of the energy of intense vorticity filaments in turbulence

被引：4
|
作者：
Titon, JHC [1 ]
Cadot, O [1 ]
机构：
[1] Univ Havre, Lab Mecan, F-76058 Le Havre, France
来源：
PHYSICAL REVIEW E | 2003年 / 67卷 / 02期
关键词：
D O I：
10.1103/PhysRevE.67.027301
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The global instantaneous power injected in a turbulent shear flow is investigated. A conditional averaging technique reveals the complete energetic transfer scenario of the intense vorticity filaments, which were visualized by Douady, Couder, and Brachet [Phys. Rev. Lett. 67, 983 (1991)]. It is found that during their existence filaments store a significant part of the turbulent kinetic energy. This energy is dissipated during the destruction phase of filaments. The total energy transferred to small scales due to filaments is quantified on the basis of a global flow visualization.
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页数：4
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