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Effects of windbreak structure on wind flow

, : Effects of windbreak structure on wind flow. Agriculture, Ecosystems and Environment 22-23: 41-69

A review of the literature, discussing the effects on air flow of: windbreak shape, length and porosity; angle and stability of approach flow; and combination with other windbreaks.

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Related references

Hayakawa, S.; Motoda, Y., 1985: Studies on the wind in the windward and leeward of windbreak structure. (1) Characteristics of the horizontal flow patterns obtained from the simulation of idealized horizontal windbreak structure. A theoretical analysis of air flow near a windbreak was carried out using a computer program. Shelter density and Reynolds number were examined in detail.

Maki, T., 1985: Studies on the windbreak nets. (8) Effects on the micrometeorological modification and wind erosion prevention by a windbreak net at the bare ground field in winter and spring. The effect of wind speed, relativity humidity, air temp., surface soil temp. and soil temp. to 4 cm depth on wind erosion of soil around a 2 m high net was studied.

Yu, Fc, 1986: Effects of wind drag in coastal windbreaks. III. An investigation on the characteristics of air flow above the canopy of windbreak. Journal of agriculture and forestry 34(2-1): 89-101

Banzhaf, J.; Leihner, D.E.; Buerkert, A.; Serafini, P.G., 1992: Soil tillage and windbreak effects on millet and cowpea: I. Wind speed, evaporation, and wind erosion. Deforestration, overgrazing, and declining soil regeneration periods have resulted in increased wind erosion problems in dry areas of the West African Sahel, but little is known about the bio-physical factors involved. This research was conducted...

Anonymous, 1952: On the windbreak in the field III Systematic studies on the windbreak by the wind-tunnel experiment method

Guan DeXin; Zhu TingYao, 1998: Relationship between windbreak structure and wind-resistance ability. A formula to calculate the moment of the wind force on a windbreak (shelterbelt) is presented. As an index, the moment is used to analyse the relationship between the wind resistance of a windbreak and its structural characteristics (height, perme...

Cote, D.A.; Bugg, J.D.; Wolf, T.M., 2006: Wind tunnel modelling of flow near a windbreak with vertically varying optical porosity. Experiments were performed in the University of Saskatchewan wind tunnel to determine aerodynamic characteristics downwind of a model windbreak within an atmospheric boundary layer. The windbreak was divided into three equal sections vertically an...

Maki, T., 1982: Studies on the windbreak nets. (6) Criteria of windbreak nets based on aerodynamic characteristics in a wind tunnel. Wind speed and air pressure were measured for a windbreak net in a small wind tunnel of dimensions 2.0x0.5x0.5 m inside a larger wind tunnel of dimensions 9.0x2.0x2.0 m. Curves are presented for measurement of windward and leeward wind speeds as a...

Fougerouze, J., 1968: Windbreak effects in a tropical trade-wind climate. Windbreaks in Guadeloupe reduced potential evapotranspiration and increased air temperature, improving crop yields and water economy. Their effective range was less (10-12 times their height) than in temperate climates. Some problems associated wi...

Zhu, J.-Jun; Jiang, F.-Qi; Matsuzaki, T., 2002: Spacing interval between principal tree windbreaks: Based on the relationship between windbreak structure and wind reduction. Relative windspeed reduction was measured behind nine relatively narrow, homogenous tree windbreaks with porosities between 0.13-0.33, and behind 28 combinations of model stubble barriers representing 25 different optical porosities (0.00-0.80). T...