The wake behind the sphere; analysis of vortices during transition from steadiness to unsteadiness

被引：0
|
作者：
Przadka, W. [1 ]
Miedzik, J. [1 ]
Gumowski, K. [1 ]
Goujon-Durand, S. [2 ]
Wesfreid, J. E. [2 ]
机构：
[1] Warsaw Univ Technol, Inst Aeronaut & Appl Mech, PL-00665 Warsaw, Poland
[2] PMMH ESPCI, CNRS 7636, F-75231 Paris 05, France
来源：
ARCHIVES OF MECHANICS | 2008年 / 60卷 / 06期
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中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
THIS PAPER REPORTS about all experimental investigation of the wake behind a solid sphere on a low velocity hydrodynamical channel for the Reynolds number in the range 250-310. The aim of the work is to analyze the size and shape of the vortices' cores and its change as a function of the Reynolds number. Special attention is paid to the transition from stationary flow, characterized by two counter-rotating longitudinal vortices, to instationary flow. The two-coloured visualization of the wake in steady and unsteady regimes is also presented.
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页码：467 / 474
页数：8
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