Results 11 to 20 of about 5,953 (264)

Turbulent mixing and heat fluxes under lake ice: the role of seiche oscillations [PDF]

open access: yesHydrology and Earth System Sciences, 2018
We performed a field study on mixing and vertical heat transport under the ice cover of an Arctic lake. Mixing intensities were estimated from small-scale oscillations of water temperature and turbulent kinetic energy dissipation rates derived from ...
G. Kirillin   +3 more
doaj   +1 more source

A Comparison between Statistical Behaviours of Scalar Dissipation Rate between Homogeneous MILD Combustion and Premixed Turbulent Flames

open access: yesEnergies, 2022
Three-dimensional Direct Numerical Simulations (DNS) data has been utilised to analyse statistical behaviours of the scalar dissipation rate (SDR) and its transport for homogeneous methane-air mixture turbulent Moderate or Intense Low oxygen Dilution ...
Frederick W. Young   +4 more
doaj   +1 more source

Lateral turbulent mixing forces in the long shore current calculation by Longuet-Higgins method and their influence on long shore sediment transport

open access: yesVietnam Journal of Mechanics, 2003
Longuet - Higgins method for long shore current and Bijker method for sediment transport calculations are worldwide used mathematical model in the coastal engineering.
Nguyen Manh Hung
doaj   +1 more source

Quality Measures of Mixing in Turbulent Flow and Effects of Molecular Diffusivity

open access: yesFluids, 2018
Results from numerical simulations of the mixing of two puffs of scalars released in a turbulent flow channel are used to introduce a measure of mixing quality, and to investigate the effectiveness of turbulent mixing as a function of the location of the
Quoc Nguyen, Dimitrios V. Papavassiliou
doaj   +1 more source

Synergistic Effect of Atmospheric Boundary Layer and Regional Transport on Aggravating Air Pollution in the Twain-Hu Basin: A Case Study

open access: yesRemote Sensing, 2022
The impact of structural variations in the atmospheric boundary layer (ABL) during the regional transport of air pollutants on its local pollution changes deserves attention.
Jie Xiong   +8 more
doaj   +1 more source

Restratification in Late Winter Lakes Induced by Cabbeling

open access: yesGeophysical Research Letters, 2023
The under‐ice fluid dynamics during late winter in many freshwater settings remain poorly understood. One example is how cabbeling, the generation of dense water by mixing water masses on different sides of the temperature of maximum density (Tmd ...
Andrew P. Grace   +2 more
doaj   +1 more source

Statistical Mechanics-Based Surrogates for Scalar Transport in Channel Flow

open access: yesFluids, 2021
Thermal hydraulics, in certain components of nuclear reactor systems, involve complex flow scenarios, such as flows assisted by free jets and stratified flows leading to turbulent mixing and thermal fluctuations.
Molly Ross, Hitesh Bindra
doaj   +1 more source

Comparison of Various Turbulence Models in Rotating Machinery Blade-to-Blade Passages

open access: yesInternational Journal of Rotating Machinery, 2000
Numerical calculations on four blade passages are done using Q3D Navier-Stokes solver with a simple mixing length turbulence model and two more advanced transport-equation approaches.
E. Y. K. Ng, S. T. Tan
doaj   +1 more source

Turbulent Flow and Mixing Characteristics in T-Junction

open access: yesJournal of Fluid Science and Technology, 2011
The flow and temperature/concentration fields in the mixing channel have complex three-dimensional and unsteady natures that are accompanied by flow separations and reattachments, longitudinal vortices, and large-scale velocity fluctuations.
Masafumi HIROTA, Hiroshi NAKAYAMA
doaj   +1 more source

Energy Release Through Internal Wave Breaking [PDF]

open access: yesOceanography, 2012
The sun inputs huge amounts of heat to the ocean, heat that would stay near the ocean's surface if it were not mechanically mixed into the deep. Warm water is less dense than cold water, so that heated surface waters "float" on top of the cold deep ...
Hans van Haren, Louis Gostiaux
doaj  

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