Direct numerical simulation of a turbulent wake: The non-equilibrium dissipation law

被引:2
作者
Dairay, T. [1 ]
Vassilicos, J. C. [1 ]
机构
[1] Imperial Coll London, Dept Aeronaut, London SW7 2AZ, England
基金
英国工程与自然科学研究理事会;
关键词
Direct numerical simulation; Turbulence; Wakes; SCHEMES; FLOWS;
D O I
10.1016/j.ijheatfluidflow.2016.06.017
中图分类号
O414.1 [热力学];
学科分类号
摘要
A Direct Numerical Simulation (DNS) study of an axisymmetric turbulent wake generated by a square plate placed normal to the incoming flow is presented. It is shown that the new axisymmetric turbulent wake scalings obtained recently for a fractal-like wake generator (Dairay et al., 2015), specifically a plate with irregular multiscale periphery placed normal to the incoming flow, are also present in an axisymmetric turbulent wake generated by a regular square plate. These new scalings are therefore not caused by the multiscale nature of the wake generator but have more general validity. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码:68 / 74
页数:7
相关论文
共 21 条
[1]   Non-equilibrium scaling laws in axisymmetric turbulent wakes [J].
Dairay, T. ;
Obligado, M. ;
Vassilicos, J. C. .
JOURNAL OF FLUID MECHANICS, 2015, 781 :166-195
[2]   Large eddy simulation of the near to intermediate wake of a heated sphere at Re=10,000 [J].
de Stadler, Matthew B. ;
Rapaka, Narsimha R. ;
Sarkar, Sutanu .
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2014, 49 :2-10
[3]  
George W. K., 1989, Advances in Turbulence
[4]   Energy dissipation and flux laws for unsteady turbulence [J].
Goto, Susumu ;
Vassilicos, J. C. .
PHYSICS LETTERS A, 2015, 379 (16-17) :1144-1148
[5]   Equilibrium similarity, effects of initial conditions and local Reynolds number on the axisymmetric wake [J].
Johansson, PBV ;
George, WK ;
Gourlay, MJ .
PHYSICS OF FLUIDS, 2003, 15 (03) :603-617
[6]  
KOLMOGOROV AV, 1941, ACAD SCI URSS, V32, P16
[7]   A numerical strategy to combine high-order schemes, complex geometry and parallel computing for high resolution DNS of fractal generated turbulence [J].
Laizet, S. ;
Lamballais, E. ;
Vassilicos, J. C. .
COMPUTERS & FLUIDS, 2010, 39 (03) :471-484
[8]   Influence of the spatial resolution on fine-scale features in DNS of turbulence generated by a single square grid [J].
Laizet, Sylvain ;
Nedic, Jovan ;
Vassilicos, Christos .
INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS, 2015, 29 (3-5) :286-302
[9]   Incompact3d: A powerful tool to tackle turbulence problems with up to O(105) computational cores [J].
Laizet, Sylvain ;
Li, Ning .
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, 2011, 67 (11) :1735-1757
[10]   High-order compact schemes for incompressible flows: A simple and efficient method with quasi-spectral accuracy [J].
Laizet, Sylvain ;
Lamballais, Eric .
JOURNAL OF COMPUTATIONAL PHYSICS, 2009, 228 (16) :5989-6015