Yaglom-like equation in axisymmetric anisotropic turbulence

PHYSICA D-NONLINEAR PHENOMENA

卷:241

Article

Danaila, L.¹  Krawczynski, J. F.¹  Thiesset, F.¹  Renou, B.¹ 

[1] Univ Rouen, CORIA UMR 6614, St Etienne, France

关键词: Scale-by-scale energy budgets;    Axisymmetric turbulence;    Coherent motion;    Opposed jets;    PIV measurements;    Energy transfer;   

DOI  :  10.1016/j.physd.2011.08.011

来源: Elsevier

【 摘 要 】

A scale-by-scale kinetic energy budget equation is developed for inhomogeneous and anisotropic turbulence. This equation reduces to Yaglom's 4/3 law, under more strict assumptions. Experimental data obtained in the impact region of two opposed jets, in a multiple-opposed-jets flow, are used to partially validate the analytical development and to better characterize this complex flow. It is shown that the energy transfer is mainly performed in planes perpendicular to the axisymmetry axis, whereas it is strongly inhibited along the axisymmetry direction. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

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