Results 261 to 270 of about 113,224 (304)

Second Order Modeling of Turbulent Transport in the Surface Mixed Layer

Boundary-Layer Meteorology, 1984
A model for the simultaneous transport of heat and water vapor is presented. In an effort to resolve the structure of the entrainment region at the inversion base, models are constructed so as to satisfy realizability as far as possible. Density anomaly and water vapor mixture fraction (specific humidity) are taken as the basic variables.
J. L. Lumley, P. Mansfield
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Turbulent mixing and transport in a thermally stratified interfacial layer in decaying grid turbulence

Physics of Fluids A: Fluid Dynamics, 1991
A stably stratified mixing layer, sandwiched in between regions of neutral turbulence, was studied in decaying grid turbulence. The layer, which was shearless, was formed by heating the upper half of the flow by means of elements placed at the entrance to the plenum of a large, open circuit low speed wind tunnel 0.91×0.91 m2 in cross section and 9.14 m
null Jayesh, Kyunghwan Yoon, Z. Warhaft
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SCALAR TRANSPORT AND MIXING IN TURBULENT STRATIFIED SHEAR FLOW

Proceeding of First Symposium on Turbulence and Shear Flow Phenomena, 1999
In this study, the evolution of the velocity field and scalar concentration fields in stably stratified shear flow is studied using direct numerical simulations. Two cases with vertical mean shear and horizontal mean shear are compared. In both cases, the growth of the turbulent kinetic energy weakens as the Richardson number is increased. However, the
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Scalar Transport Near the Turbulent/Non-Turbulent Interface in Reacting Compressible Mixing Layers

2020
Direct numerical simulations of temporally evolving compressible reacting mixing layers with Schmidt number equal to one are performed to examine the transport of a conserved scalar across the turbulent/non-turbulent interface (TNTI). The budgets of the scalar-gradient transport equation are used to study the effects of compressibility and heat release
Reza Jahanbakhshi, Cyrus K. Madnia
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Turbulent mixing and fluid transport within Florida Bay seagrass meadows

Advances in Water Resources, 2017
Abstract Seagrasses serve an important function in the ecology of Florida Bay, providing critical nursery habitat and a food source for a variety of organisms. They also create significant benthic structure that induces drag, altering local hydrodynamics that can influence mixing and nutrient dynamics.
Jennifer C.R. Hansen, Matthew A. Reidenbach   +1 more
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Transporting passive additives in a turbulent medium under convective mixing

Izvestiya, Atmospheric and Oceanic Physics, 2009
The vertical transport of passive additives in a medium in the presence of both turbulent and convective mixing is studied. It is shown that, despite the fact that turbulent and convective fluxes are uncorrelated, no additive mechanism of mixing exists.
V. P. Kukharets, O. G. Nalbandyan, A. V. Shmakov   +2 more
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Turbulent transport in mixed states of convective cells and sheared flows

Physics of Plasmas, 1996
Low-order mode coupling equations are used to describe recent computer simulations of resistive-g turbulent convection that show bifurcations for the onset of steady and pulsating sheared mass flows. The three convective transport states are identified with the tokamak confinement regimes called low-mode (L-mode), high-mode (H-mode), and edge-localized
W. Horton, G. Hu, G. Laval
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Energy transport due to turbulent mixing in the atmosphere

Journal of Atmospheric and Terrestrial Physics, 1961
Abstract An order-of-magnitude analysis of energy transport in a horizontally convecting turbulent atmosphere indicates that three fluxes can contribute importantly to vertical energy transfer: a heat flux due to turbulent mixing of the compressible fluid through the vertical temperature and pressure gradients; a flux of total energy produced by ...
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Transport characteristics of thermal plume driven by turbulent mixing in stairwell

International Journal of Thermal Sciences, 2015
A set of experiments was conducted to study the transport characteristics of thermal plume driven by turbulent mixing in a 1/3 scale stairwell with single opening. The opening location was varied at the stairwell height direction to obtain different air supply conditions.
Jie Ji, Man Li, Yifan Li, Jiping Zhu, Jinhua Sun   +4 more
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Turbulent mixing and molecular transport in highly under-expanded hydrogen jets

International Journal of Hydrogen Energy, 2018
Abstract Highly under-expanded hydrogen jets releasing in quiescent air atmosphere are studied using highly resolved numerical simulations accounting for complex multicomponent molecular transport phenomena. In a first step of the analysis, the main overall features of the hydrogen jet structure are described and compared to those of the classical ...
Romain Buttay, Guillaume Lehnasch, Arnaud Mura   +2 more
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