Results 181 to 190 of about 43,251 (230)

On the decay of homogeneous isotropic turbulence

Physics of Fluids, 2000
Decaying homogeneous, isotropic turbulence is investigated using a phenomenological model based on the three-dimensional turbulent energy spectra. We generalize the approach first used by Comte-Bellot and Corrsin [J. Fluid Mech. 25, 657 (1966)] and revised by Saffman [J. Fluid Mech. 27, 581 (1967); Phys. Fluids 10, 1349 (1967)].
Skrbek, L., Stalp, Steven R.
openaire   +1 more source

Scale invariance in finite Reynolds number homogeneous isotropic turbulence

Journal of Fluid Mechanics, 2019
The problem of homogeneous isotropic turbulence (HIT) is revisited within the analytical framework of the Navier–Stokes equations, with a view to assessing rigorously the consequences of the scale invariance (an exact property of the Navier–Stokes ...
L. Djenidi, R. Antonia, S. Tang
semanticscholar   +1 more source

Eddy diffusivity operator in homogeneous isotropic turbulence

Physical Review Fluids, 2019
We use the recently developed Macroscopic Forcing Method [Mani and Park, Physical Review Fluids, 6:054607, 2021] to compute the scale-dependent eddy diffusivity characterizing ensemble-averaged scalar and momentum transport in incompressible homogeneous ...
Yasaman Shirian, A. Mani
semanticscholar   +1 more source

Homogeneous and Isotropic Turbulence

2015
The study of homogeneous and isotropic turbulence is very rewarding for two reasons. On the one hand, it is possible to do an important part of it analytically, and on the other hand, the smallest turbulent structures in most turbulent flows have an almost isotropic behaviour.
Christophe Bailly, Geneviève Comte-Bellot   +1 more
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The motion of microbubbles in a forced isotropic and homogeneous turbulence

Applied Scientific Research, 1993
We have studied the concentration distribution of microbubbles in forced isotropic turbulence. An initially uniform concentration field is shown to evolve to a highlyintermittent orspotty concentration distribution at long time due to the interactions of microbubbles with small-scale, intense, and coherent flow vortical structures.
Lian-Ping Wang, Martin R. Maxey
openaire   +1 more source

Spectral energy transfer in a viscoelastic homogeneous isotropic turbulence

The Physics of Fluids, 2019
Energy dynamics in elastoinertial turbulence is investigated by performing different direct numerical simulations of stationary, homogeneous isotropic turbulence for the range of Weissenberg numbers 0 ≤ Wi ≤ 9.
M. Fathali, S. Khoei
semanticscholar   +1 more source

Accelerations in isotropic and homogeneous turbulence and Taylor’s hypothesis

Physics of Fluids, 2000
The validity of Taylor’s hypothesis is analyzed by comparing the root mean square (rms) values of full (Lagrangian) and inertial accelerations in an isotropic and homogeneous turbulent flow. Full, local, and inertial accelerations in turbulence were decomposed into solenoidal and potential components, which made it possible to avoid dealing, at least ...
Pinsky, M., Khain, A., Tsinober, A.
openaire   +1 more source

The decay of homogeneous isotropic turbulence

Physics of Fluids A: Fluid Dynamics, 1992
A new theory for the decay of homogeneous, isotropic turbulence is proposed in which truly self-preserving solutions to the spectral energy equation are found that are valid at all scales of motion. The approach differs from the classical approach in that the spectrum and the nonlinear spectral transfer terms are not assumed a priori to scale with a ...
openaire   +2 more sources

Bubbles in Isotropic Homogeneous Turbulence

2012
An experimental study of the bubble deformation in an isotropic homogeneous turbulent flow field was carried out. It is of a fundamental importance to understand the rate of coalescence and breakup in two phase disperse flows.
Ernesto Mancilla, Roberto Zenit, Gabriel Ascanio, Enrique Soto   +3 more
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Particle behavior in homogeneous isotropic turbulence

Acta Mechanica Sinica, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
He, Zhu, Liu, Zhaohui, Chen, Sheng, Weng, Lei, Zheng, Chuguang   +4 more
openaire   +1 more source