Reduction of horizontal wind speed in a boundary layer with obstacles

S. Emeis; S. Frandsen

doi:10.1007/BF00708968

Reduction of horizontal wind speed in a boundary layer with obstacles

S. Emeis, S. Frandsen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The reduction of horizontal wind speed at hub height in an infinite cluster of wind turbines is computed from a balance between a loss of horizontal momentum due to the drag and replenishment from above by turbulent fluxes. This reduction is derived without assumptions concerning the vertical wind profile above or below hub height, only some basic assumptions on turbulent exchange have been made. Two applications of the result are presented, one considering wind turbines and one pressure drag on orographic obstacles in the atmospheric boundary layer. Both applications are basically governed by the same kind of momentum balance.

Original language	English
Journal	Boundary-Layer Meteorology
Volume	64
Issue number	3
Pages (from-to)	297-305
ISSN	0006-8314
DOIs	https://doi.org/10.1007/BF00708968
Publication status	Published - 1993

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title = "Reduction of horizontal wind speed in a boundary layer with obstacles",

abstract = "The reduction of horizontal wind speed at hub height in an infinite cluster of wind turbines is computed from a balance between a loss of horizontal momentum due to the drag and replenishment from above by turbulent fluxes. This reduction is derived without assumptions concerning the vertical wind profile above or below hub height, only some basic assumptions on turbulent exchange have been made. Two applications of the result are presented, one considering wind turbines and one pressure drag on orographic obstacles in the atmospheric boundary layer. Both applications are basically governed by the same kind of momentum balance. ",

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AU - Emeis, S.

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AB - The reduction of horizontal wind speed at hub height in an infinite cluster of wind turbines is computed from a balance between a loss of horizontal momentum due to the drag and replenishment from above by turbulent fluxes. This reduction is derived without assumptions concerning the vertical wind profile above or below hub height, only some basic assumptions on turbulent exchange have been made. Two applications of the result are presented, one considering wind turbines and one pressure drag on orographic obstacles in the atmospheric boundary layer. Both applications are basically governed by the same kind of momentum balance.

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Reduction of horizontal wind speed in a boundary layer with obstacles

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