Effects of a forest clearing: An experimental and numerical assessment

Tetsuya Nakamura, Koji Fukagata, Antonio Segalini, P. Henrik Alfredsson

研究成果: Conference contribution

抄録

The flow above a forest model with and without the presence of a clearing is investigated experimentally in a wind tunnel facility by means of Particle Image Velocimetry. The results have been analyzed in terms of basic velocity statistics and vertical integral length scale and a comparison of the two geometries is presented. In order to improve the current flow understanding and to complement the experimental results, Large Eddy Simulations of the same flows under similar operating conditions are planned. The experimental results indicate that the clearing is associated to a velocity defect in the mean velocity profile associated with a significant vertical momentum flux. The turbulence is redistributed amongst the various velocity components so that the streamwise velocity variance is reduced while the vertical velocity variance is enhanced. From the clearing windward edge the turbulence mixing contributes to the decrease of the vertical correlation length that increases again after the clearing trailing edge.

本文言語English
ホスト出版物のタイトルInternational Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013
出版社TSFP-8
1
ISBN(電子版)9780000000002
出版ステータスPublished - 2013 1 1
イベント8th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013 - Poitiers, France
継続期間: 2013 8 282013 8 30

Other

Other8th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013
CountryFrance
CityPoitiers
Period13/8/2813/8/30

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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