Results 11 to 20 of about 5,771 (267)
Minimalist turbulent boundary layer model [PDF]
Physical Review E, 2009 We introduce an elementary model of a turbulent boundary layer over a flat surface, given as a vertical random distribution of spanwise Lamb-Oseen vortex configurations placed over a non-slip boundary condition line. We are able to reproduce several important features of realistic flows, such as the viscous and logarithmic boundary sublayers, and the ...
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Dynamics of turbulent western-boundary currents at low latitude in a shallow-water model [PDF]
Ocean Science, 2015 The dynamics of low latitude turbulent western-boundary currents (WBCs) crossing the Equator are considered using numerical results from integrations of a reduced-gravity shallow-water model.
C. Q. C. Akuetevi, A. Wirth
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Turbulent dispersion in cloud-topped boundary layers [PDF]
Atmospheric Chemistry and Physics, 2009 Compared to dry boundary layers, dispersion in cloud-topped boundary layers has received less attention. In this LES based numerical study we investigate the dispersion of a passive tracer in the form of Lagrangian particles for four kinds of atmospheric
R. A. Verzijlbergh +3 more
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Overlapping turbulent boundary layers in an energetic coastal sea [PDF]
Ocean ScienceTurbulent mixing properties were directly observed to understand the interactions and overlapping events of wind-forced and tidally forced boundary layers in a deep, weakly stratified coastal sea.
A. F. Valcarcel +7 more
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Gaoyuan qixiang, 2022 Atmospheric boundary layer structure affects the exchange of material and energy between the earth and air， the dispersion of pollutants and human health.The boundary layer structure is significantly affected by surface heating and dynamics， but it is ...
Min ZHANG +3 more
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Complex Effects of Free Stream Turbulence and Surface Roughness on the Transitional Intermittency
Communications, 2012 The comparison of transitional intermittency distributions in boundary layers on smooth and rough surface is presented. The conditional analysis of the instantaneous wall friction is applied on time records made in transitional boundary layers ...
Ondrej Hladik +3 more
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An Improved Synthetic Eddy Method for Generating Inlet Turbulent Boundary Layers
Aerospace, 2022 An improved synthetic eddy method (SEM) is proposed in this paper for generating the boundary layer at the inlet of a computational domain via direct numerical simulation.
Dapeng Xiong, Yinxin Yang, Yanan Wang
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Boundary layers and turbulence
Physical 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
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Characterising Momentum Flux Events in High Reynolds Number Turbulent Boundary Layers
Fluids, 2021 The momentum flux in a canonical turbulent boundary layer is known to have a time-series signature that is characterised by a highly intermittent variation, which includes very short periods of intense flux activity. Here, we study the variation in these
Rahul Deshpande, Ivan Marusic
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Modelling vortex generator effects on turbulent boundary layers with integral boundary layer equations [PDF]
Wind Energy ScienceVortex generators (VGs) are known to delay separation and stall, allowing the design of airfoils with larger stall margins, particularly for thick airfoil sections in the inboard and midboard regions of modern slender wind turbine blades.
A. Sahoo +5 more
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