Journal ArticleDOI
Intermittency and local dissipation scales under strong mean shear
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In this article, the local dissipation scale distribution and temporal fluctuations of the turbulent kinetic energy dissipation rate e in the strongly anisotropic flow past a backward facing step were investigated.Abstract:
We experimentally probe the local dissipation scale distribution Q(η) and temporal fluctuations of the turbulent kinetic energy dissipation rate e in the strongly anisotropic flow past a backward facing step A shift in Q(η) and corresponding reduction in the relative intermittency of e is observed with increasing mean shear S We offer physical arguments to elucidate the role of strong shear on the small-scale structure A local mean-shear dissipation Reynolds number, ReS ≡ ⟨e⟩/(S2ν), is proposed that may define a family of universal small-scale structures of turbulenceread more
Citations
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Theory to predict shear stress on cells in turbulent blood flow
TL;DR: It is demonstrated that energy dissipation as opposed to bulk shear stress in laminar or turbulent blood flow dictates local mechanical environment of blood cells and platelets universally.
Journal ArticleDOI
Estimation of the dissipation rate of turbulent kinetic energy: A review
Guichao Wang,Fan Yang,Ke Wu,Yong-Feng Ma,Cheng Peng,Tianshu Liu,Lian-Ping Wang,Lian-Ping Wang +7 more
TL;DR: In this paper, a comprehensive literature review on the estimation of the dissipation rate of turbulent kinetic energy is presented to assess the current state-of-the-art available in this area.
Journal ArticleDOI
Universality of local dissipation scales in turbulent boundary layer flows with and without free-stream turbulence
TL;DR: In this article, the scaling of the dissipation scale distribution of turbulent boundary layer flows with and without free-stream turbulence is examined for Reτ ≈ 1000 (Reθ ≈ 2000).
Journal ArticleDOI
Local dissipation scales in two-dimensional Rayleigh-Taylor turbulence.
Xiang Qiu,Yulu Liu,Quan Zhou +2 more
TL;DR: The results reveal that the present measured Q(η) agrees with those previously observed in homogeneous isotropic turbulence and in turbulent pipe flows, at least for the smallest scales around the classical Kolmogorov dissipation scale.
Journal ArticleDOI
On the universality of local dissipation scales in turbulent channel flow
TL;DR: In this article, Schumacher et al. used a length scale based on the attached-eddy hypothesis to define the local large-scale Reynolds number and found that the Reynolds number scaling behavior was more consistent with that observed in homogeneous, isotropic turbulence.
References
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Journal Article
The Local Structure of Turbulence in Incompressible Viscous Fluid for Very Large Reynolds' Numbers
TL;DR: In this article, the authors consider the problem of finding the components of the velocity at every point of a point with rectangular cartesian coordinates x 1, x 2, x 3, x 4, x 5, x 6, x 7, x 8.
Journal ArticleDOI
Lacunarity analysis: A general technique for the analysis of spatial patterns
Roy E. Plotnick,Robert H. Gardner,William W. Hargrove,Karen L. Prestegaard,Martin A. Perlmutter +4 more
TL;DR: Lacunarity analysis is broadly applicable to many data sets used in the natural sciences; it is illustrated its application to both geological and ecological data.
Journal ArticleDOI
Reynolds number effects on the Reynolds-stress budgets in turbulent channels
S. Hoyas,Javier Jiménez +1 more
TL;DR: In this article, the scaling of the nonzero components of the Reynolds-stress tensor is presented for numerical channels with Reynolds numbers in the range Reτ=180-2000. But the authors do not consider the effect of the wall-parallel large-scale motions.
Journal ArticleDOI
A correction method for measuring turbulence kinetic energy dissipation rate by PIV
Tomohiko Tanaka,John K. Eaton +1 more
TL;DR: In this paper, a correction method was proposed to eliminate the dominant error for the small Δx case, which was validated by using a novel PIV benchmark, random Oseen vortices synthetic image test (ROST).