Results 151 to 160 of about 1,125 (192)

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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Particles-turbulence interaction in stationary, homogeneous, isotropic turbulence

International Journal of Multiphase Flow, 2000
Abstract A physical model for the dynamics of a dispersion of solid spherical particles in an incompressible viscous fluid is outlined and used to calculate the turbulence modulation in a stationary, homogeneous and isotropic turbulent flow with particles.
G Ooms, G.H Jansen
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Particle-Turbulence Interaction in a Homogeneous, Isotropic Turbulent Suspension

Applied Mechanics Reviews, 2006
A review is given of numerical, analytical, and experimental research regarding the two-way coupling effect between particles and fluid turbulence in a homogeneous, isotropic turbulent suspension. The emphasis of this review is on the effect of the suspended particles on the spectrum of the carrier fluid, in order to explain the physical mechanisms ...
Christian Poelma, Gijs Ooms
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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
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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 ...
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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.
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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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Homogeneous and Isotropic Turbulence on the Sphere

Journal of the Atmospheric Sciences, 1983
Abstract The assumption that the streamfunction for two-dimensional nondivergent flow on the sphere is a homogeneous and isotropic random field is used to obtain a variety of results for the study of large-scale atmospheric turbulence. These results differ somewhat from those for Cartesian geometry.
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A theory of homogeneous isotropic turbulence

Applied Scientific Research, 1959
Homogeneous and isotropic turbulence has been discussed in the present paper. An attempt has been made to find the simplifying hypothesis for connecting the higher order correlation tensor with the lower ones. Starting from the Navier-Stokes equations of motion for an incompressible fluid and following the usual method of taking the averages, a ...
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Homogeneous Isotropic Turbulence

1977
Many theoretical investigations of turbulence have been developed around the concept of homogeneous, isotropic turbulence — turbulence of which the statistical properties do not vary with position and have no preferred direction. An approximation to such a motion can be obtained behind a grid, such as the one shown in Fig. 21.1, in a wind-tunnel.
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