Statistical analyses of a screen cylinder wake
نویسندگان
چکیده
منابع مشابه
Longitudinal vortex structures in a cylinder wake
Recently, flow visualizations by Wei and Smith,’ Williamson,’ Welsh et a1.,3 and Bays-Muchmore and Ahmed4 have shown that three-dimensional (3-D) vertical structures develop in the wake of a bluff body. The 3-D vertical structures were found to include pairs of counterrotating longitudinal vortices superimposed on the nominally two-dimensional (2-D) Kirmin vortex street as speculated by Grant’ ...
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Turbulence studies were made in the wake of a rotating circular cylinder in a uniform free stream. The interest was to examine the turbulence properties at the suppression of periodicity in vortex formation process. An experimental study of the turbulent near wake of a rotating circular cylinder was made at a Reynolds number of 9000 for velocity ratios, λ between 0 and 2.7. Hot-wire anemometry ...
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Despite the large amount of research devoted to bluff body wakes [1], very few studies have focused on stratified wakes despite their obvious applications to geophysical flows. Moreover, most of these studies have studied the turbulent regime in the wake of a sphere or an ellipsoid [2,3], due to its naval applications for submarine wakes. These bluff bodies have a finite height, which leads to ...
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The wake states resulting from the controlled oscillation of a cylinder transverse to the free stream are presented. A new wake state is revealed by instantaneous measurements of the total and vortex lift phases, and the phase-referenced, quantitative wake structure. This ‘‘intermediate wake state’’ occurs at oscillation frequencies between the previously observed lowand high-frequency states. ...
متن کاملRecursive dynamic mode decomposition of a transient cylinder wake
Bernd R. Noack1,2†, Witold Stankiewicz3 Marek Morzyński3 and Peter J. Schmid4 Institut PPRIME, CNRS Université de Poitiers ENSMA, UPR 3346, Départment Fluides, Thermique, Combustion, CEAT, 43 rue de l’Aérodrome, F-86036 POITIERS Cedex, France Institut für Strömungsmechanik, Technische Universität Berlin, Hermann-Blenk-Straße 37, D-38108 Braunschweig, Germany Division of Virtual Engineering, Ins...
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ژورنال
عنوان ژورنال: Fluid Dynamics Research
سال: 2016
ISSN: 0169-5983,1873-7005
DOI: 10.1088/0169-5983/49/1/015506