Results 41 to 50 of about 140,231 (211)

A Direct Assessment of Langmuir Turbulence Parameterizations in Idealized Coastal Merging Boundary Layers

open access: yesJournal of Advances in Modeling Earth Systems
Langmuir turbulence affects turbulent mixing in the ocean boundary layers and its effects require parameterizations in ocean circulation models. Most existing Langmuir turbulence parameterizations focus on the surface boundary layer in open oceans.
Zheng Wei, Qing Li, Bicheng Chen
doaj   +1 more source

On properties of the deterministic turbulence and reproducibility of its instantaneous and statistical characteristics

open access: yesTheoretical and Applied Mechanics Letters, 2014
As known from previous studies, the deterministic turbulence (DeTu) is a post-transitional flow that is turbulent according to the generally accepted statistical characteristics but possesses, meanwhile, a significant degree of determinism, i.e ...
Vladimir I. Borodulin, Yury S. Kachanov
doaj   +1 more source

Boundary layers and turbulence

open access: yesPhysical Oceanography, 1999
We analyze the results of investigation of turbulent boundary layers typical of geophysical objects. It is shown that boundary layers of various nature are self-regulating sustems characterized by relatively slow evolutionary processes of formation accompanied by the growth of instabilities of different types and then replaced by the rapid development ...
E. P. Anisimova, A. A. Speranskaya
openaire   +1 more source

Calculation methods for compressible turbulent boundary layers, 1976 [PDF]

open access: yes
Equations and closure methods for compressible turbulent boundary layers are discussed. Flow phenomena peculiar to calculation of these boundary layers were considered, along with calculations of three dimensional compressible turbulent boundary layers ...
Bushnell, D. M.   +2 more
core   +1 more source

Study of Transition to Turbulence in a Supersonic Boundary Layer Using DNS and Transition Prediction

open access: yesJournal of Fluid Science and Technology, 2007
The current understanding of supersonic boundary layer transition is reviewed in this paper. The material focuses on bypass transition in a plane supersonic boundary layer. Recent advances in DNS and engineering prediction of transition are discussed. It
Hiroshi MAEKAWA
doaj   +1 more source

A theoretical analysis of simulated transonic boundary layers in cryogenic-nitrogen wind tunnels [PDF]

open access: yes
A theoretical analysis was made to determine the real gas effects on simulation of transonic boundary layers in wind tunnels with cryogenic nitrogen as the test gas.
Adcock, J. B., Johnson, C. B.
core   +1 more source

Evaluating Scale‐Aware Boundary Layer Similarity Functions and Their Mechanisms in Tropical Cyclone Modeling Using Idealized Large‐Eddy Simulations

open access: yesGeophysical Research Letters
Accurate representation of scale‐aware boundary layer similarity functions at gray‐zone resolutions is crucial for advancing boundary layer schemes.
Yinjun Wang   +5 more
doaj   +1 more source

Direct Numerical Simulation Analysis of the Closure of Turbulent Scalar Flux during Flame–Wall Interaction of Premixed Flames within Turbulent Boundary Layers

open access: yesEnergies
The statistical behaviour and modelling of turbulent fluxes of the reaction progress variable and non-dimensional temperature in the context of Reynolds-Averaged Navier–Stokes (RANS) simulations have been analysed for flame–wall interactions within ...
Umair Ahmed   +2 more
doaj   +1 more source

Adverse-Pressure-Gradient effects on Turbulent Boundary Layers [PDF]

open access: yes, 2018
Wall-bounded turbulence is present in many relevant fluid-flow problems such as the flow around wings, land and sea vehicles, or in turbines, compressors, etc. Simplified scenarios, such as the zero-pressure-gradient (ZPG) turbulent boundary layers (TBL)
Discetti, Stefano
core  

Designing a Fully‐Tunable and Versatile TKE‐l Turbulence Parameterization for the Simulation of Stable Boundary Layers

open access: yesJournal of Advances in Modeling Earth Systems
This study presents the development of a so‐called Turbulent Kinetic Energy (TKE)‐l, or TKE‐l, parameterization of the diffusion coefficients for the representation of turbulent diffusion in neutral and stable conditions in large‐scale atmospheric models.
É. Vignon   +14 more
doaj   +1 more source

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