Wind protection by model fences in a simulated atmospheric boundary layer

Raine, JK; Stevenson, D. C.

doi:10.1016/0167-6105(77)90015-0

Cited by 225 publications

(130 citation statements)

References 5 publications

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“…The observed flow structure downwind of a porous windbreak was qualitatively similar to that observed by Raine and Stevenson, 11 but there are quantitative differences due to differences in the windbreaks and simulated boundary layer characteristics in the two studies.…”

Section: Flow About a Porous Windbreaksupporting

confidence: 66%

“…longitudinal velocity fluctuation and U is the mean wind speed) enhancements occur with decreasing porosity. 11 The maximum in u' is located just above and extends downstream from the top of the windbreak, as a result of turbulence generated in the windbreak-induced shear layer. As expected, the location of the sheltered region shifts as the wind direction varies from that of the windbreak normal.…”

mentioning

confidence: 99%

“…Air incident on a porous windbreak flows over, around, and through the windbreak, but regions of reduced wind speed occur both downwind and upwind. 11 ' 12 Greater wind speed reductions and turbulence intensity (u'/U, where u' is the r.m.s. longitudinal velocity fluctuation and U is the mean wind speed) enhancements occur with decreasing porosity.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Windbreak Effectiveness for Storage Pile Fugitive Dust Control: A Wind Tunnel Study

Stunder

Arya

1988

JAPCA

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Section: Flow About a Porous Windbreaksupporting

confidence: 66%

mentioning

confidence: 99%

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Windbreak Effectiveness for Storage Pile Fugitive Dust Control: A Wind Tunnel Study

Stunder

Arya

1988

JAPCA

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“…Because experimental conditions are very difficult to control for natural tree shelterbelts in the open environment, numerous experiments have been conducted with artificial fences or screens either in laboratory wind tunnels (e.g., Raine & Stevenson 1977, Ogawa & Diosey 1980, Perera 1981 or in the atmospheric boundary layer (e.g., Bradley & Mulhearn 1983, Jacobs 1984. As a -result, the shelter effects and aerodynamics of artificial fences and screens (nearly infinitely thin), including the role of shelterbelt density (porosity) in determining shelter effects, are largely understood.…”

Section: The Effects Of Three Dimensionality Of Shelterbeltmentioning

confidence: 99%

SHELTERBELTS ANDWINDBREAKS:Mathematical Modeling and Computer Simulations of Turbulent Flows

Wang

Takle

Shen

2001

Annu. Rev. Fluid Mech.

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Shelterbelts or windbreaks have been used for centuries to reduce wind speed, to control heat and moisture transfer and pollutant diffusion, to improve climate and environment, and to increase crop yields; but only within the last few decades have systematic studies considered the aerodynamics and shelter mechanisms of shelterbelts and windbreaks. This is a review of recent modeling and numerical simulation studies as well as the mechanisms that control flow and turbulence around shelterbelts and windbreaks. We compare numerical simulations with experimental data and explain the relationships between sheltering effects and the structure of shelterbelts and windbreaks. We discuss how and why the desired effects are achieved by using numerical analysis. This chapter begins with the derivation of a general equation set for porous shelterbelts and windbreaks; the numerical model and simulation procedure are developed; unseparated and separated flows are predicted and characterized; the momentum budget and This article has been accepted for publication by Annual Reviews in a revised form. 23shelter mechanisms are analyzed; the effects of wind direction, density, width, and three dimensionality of shelterbelt structure on flow and turbulence are systematically described.Recent modeling and simulation of heat flux and évapotranspiration also are summarized.Finally, we discuss use of high-performance distributed and parallel computing as well as clusters of networked workstations to enhance performance of the model applied to simulations of shelterbelts and windbreaks.

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“…130). The wind sheltering effect becomes a tradeoff between mean wind velocity reduction in the lee of the barrier and turbulence in the separation bubble as determined by barrier permeability.…”

Section: -5 Section IX Field Arraysmentioning

confidence: 99%

Wind loading on solar concentrators: some general considerations

Roschke¹

1984

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Wind protection by model fences in a simulated atmospheric boundary layer

Cited by 225 publications

References 5 publications

Windbreak Effectiveness for Storage Pile Fugitive Dust Control: A Wind Tunnel Study

Windbreak Effectiveness for Storage Pile Fugitive Dust Control: A Wind Tunnel Study

SHELTERBELTS ANDWINDBREAKS:Mathematical Modeling and Computer Simulations of Turbulent Flows

Wind loading on solar concentrators: some general considerations

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