Results 41 to 50 of about 33,900 (190)
Homogeneity and isotropy in a laboratory turbulent flow
, 2013 We present a new design for a stirred tank that is forced by two parallel planar arrays of randomly actuated synthetic jets. This arrangement creates turbulence at high Reynolds number with low mean flow.
Bellani, Gabriele, Variano, Evan A.
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On velocity structure functions and the spherical vortex model for isotropic turbulence [PDF]
, 2001 We investigate a stochastic model for homogeneous, isotropic turbulence based on Hill's spherical vortex. This is an extension of the method of Synge and Lin [Trans. R. Soc. Can.
Aivazis, Keri A., Pullin, D. I.
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AtmosphereHomogeneous isotropic turbulence (HIT) has been a useful theoretical concept for more than fifty years of theory, modelling, and calculations. Some exact results are revisited in incompressible HIT, with special emphasis on the 4/5 Kolmogorov law.
Claude Cambon
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The spatio-temporal spectrum of turbulent flows
, 2015 Identification and extraction of vortical structures and of waves in a disorganised flow is a mayor challenge in the study of turbulence. We present a study of the spatio-temporal behavior of turbulent flows in the presence of different restitutive ...
Cobelli, P. J. +2 more
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An overview of Millionschikov's quasi-normality hypothesis applied to turbulence
International Journal of Applied Mechanics and Engineering, 2014 In this paper, we examine the zero-fourth cumulant approximation that was applied to fluctuating velocity components of homogeneous and isotropic turbulence by M.D. Millionschikov.
C. Mamaloukas, H.P. Mazumdar
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Theoretical aspects of homogenous isotropic turbulence [PDF]
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2004 We review some recent advances on the problem of fully developed turbulence within the mathematical and physical points of view. From the mathematical perspective, we discuss a framework which has been developed for the rigorous treatment of the conventional statistical theory of turbulence and address some of the rigorous results which have been ...
Moriconi, L., Rosa, R.
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Correlation functions in isotropic and anisotropic turbulence: the role of the symmetry group
, 1998 The theory of fully developed turbulence is usually considered in an idealized homogeneous and isotropic state. Real turbulent flows exhibit the effects of anisotropic forcing.
A. N. Kolmogorov +17 more
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Some Early Studies of Isotropic Turbulence: A Review
AtmosphereA re-examination of some early classic turbulence literature, mainly of isotropic turbulence, is given in this selective review. Some early studies, including original concepts and points, are reviewed or highlighted.
John Z. Shi
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Secondary Flow near an Undulatory Surface Induced by Wall Blocking Effect
Journal of Fluid Science and Technology, 2007 Secondary mean motions of Prandtl's second kind near an undulatory surface are explained in terms of the turbulent blocking effect and kinematic boundary conditions at the surface, and the order of magnitude is estimated. The isotropic turbulence is
Kouji NAGATA +2 more
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Pair reversal in homogeneous isotropic turbulence
Journal of Physics: Conference Series, 2011 We show that the separation of particle pairs in the inertial subrange of homogeneous isotropic turbulence is strongly influenced by the pairs that separate quasi-diffusively. We quantify the influence of the diffusive separators by considering the probability that a pair will 'reverse' direction across a given separation i.e.
B J Devenish, D J Thomson
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