Laser measurements of flow over a forest

Jakob Mann; Ebba Dellwik; Ferhat Bingöl; Ole Rathmann

doi:10.1088/1755-1315/1/1/012050

Laser measurements of flow over a forest

Jakob Mann
, Ebba Dellwik
, Ferhat Bingöl
, Ole Rathmann

Research output: Contribution to journal › Conference article › Research

Abstract

It is estimated that 20-30% of the total European wind energy growth takes place in areas where the wind flow is affected by forests. The description of the wind conditions near and above forests poses a challenge, since assumptions of classical boundary-layer theory are violated. Turbines are designed for maximal turbulence intensity and wind profile gradient. In forested areas, these limits are often violated possibly leading to reduced turbine life-time. In this paper we investigate the mean wind profile and turbulence statistics above an 85 years old dense beech forest by use of a laser Doppler anemometer and compare the profiles with a CFD model specifically made for the modelling of flow over vegetation canopies.

Original language	English
Journal	IOP Conference Series: Earth and Environmental Science
Volume	1
Pages (from-to)	U406-U410
ISSN	1755-1307
DOIs	https://doi.org/10.1088/1755-1315/1/1/012050
Publication status	Published - 2008
Event	14th International symposium for the advancement of boundary layer remote sensing - Risø National Laboratory, DTU, Risø, Denmark Duration: 23 Jun 2008 → 25 Jun 2008 Conference number: 14

Conference

Conference	14th International symposium for the advancement of boundary layer remote sensing
Number	14
Location	Risø National Laboratory, DTU
Country/Territory	Denmark
City	Risø
Period	23/06/2008 → 25/06/2008

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title = "Laser measurements of flow over a forest",

abstract = "It is estimated that 20-30\% of the total European wind energy growth takes place in areas where the wind flow is affected by forests. The description of the wind conditions near and above forests poses a challenge, since assumptions of classical boundary-layer theory are violated. Turbines are designed for maximal turbulence intensity and wind profile gradient. In forested areas, these limits are often violated possibly leading to reduced turbine life-time. In this paper we investigate the mean wind profile and turbulence statistics above an 85 years old dense beech forest by use of a laser Doppler anemometer and compare the profiles with a CFD model specifically made for the modelling of flow over vegetation canopies.",

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author = "Jakob Mann and Ebba Dellwik and Ferhat Bing{\"o}l and Ole Rathmann",

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doi = "10.1088/1755-1315/1/1/012050",

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T1 - Laser measurements of flow over a forest

AU - Mann, Jakob

AU - Dellwik, Ebba

AU - Bingöl, Ferhat

AU - Rathmann, Ole

N1 - Conference code: 14

PY - 2008

Y1 - 2008

N2 - It is estimated that 20-30% of the total European wind energy growth takes place in areas where the wind flow is affected by forests. The description of the wind conditions near and above forests poses a challenge, since assumptions of classical boundary-layer theory are violated. Turbines are designed for maximal turbulence intensity and wind profile gradient. In forested areas, these limits are often violated possibly leading to reduced turbine life-time. In this paper we investigate the mean wind profile and turbulence statistics above an 85 years old dense beech forest by use of a laser Doppler anemometer and compare the profiles with a CFD model specifically made for the modelling of flow over vegetation canopies.

AB - It is estimated that 20-30% of the total European wind energy growth takes place in areas where the wind flow is affected by forests. The description of the wind conditions near and above forests poses a challenge, since assumptions of classical boundary-layer theory are violated. Turbines are designed for maximal turbulence intensity and wind profile gradient. In forested areas, these limits are often violated possibly leading to reduced turbine life-time. In this paper we investigate the mean wind profile and turbulence statistics above an 85 years old dense beech forest by use of a laser Doppler anemometer and compare the profiles with a CFD model specifically made for the modelling of flow over vegetation canopies.

KW - Vindenergi

U2 - 10.1088/1755-1315/1/1/012050

DO - 10.1088/1755-1315/1/1/012050

M3 - Conference article

SN - 1755-1307

VL - 1

SP - U406-U410

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

T2 - 14th International symposium for the advancement of boundary layer remote sensing

Y2 - 23 June 2008 through 25 June 2008

ER -

Laser measurements of flow over a forest

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