Wind tunnel experiment on effect of shape of an obstacle on total drag force of regular array

Aya Hagishima, Jun Tanimoto, Manato Yamaguchi, Yoshiki Kikuchi

Research output: Contribution to journalArticle

Abstract

Drag coefficients (Cd) and vertical wind profiles for regular arrays were measured in a systematic series of wind tunnel experiment to investigate Hie shape effect of roughness element on Cd and air flow dynamics, and following results were presented. 1) Cd of an array consists of miniature vehicles was compared with that of an array consists of a combination of two different blocks, and the former is 10% to 20% lower than the latter due to the effect of the curved surface, in spite of their similar external scale. 2) The staggered array consists of elements with higher ratio shows larger peak of Cd against roughness density because of the less bluff-body character of a slender obstacle. 3) Turbulent characteristics within canopy layer of an array with high aspect ratio is similar to that of plant canopy.

Original languageEnglish
Pages (from-to)485-492
Number of pages8
JournalJournal of Environmental Engineering
Volume76
Issue number663
DOIs
Publication statusPublished - May 1 2011

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Wind tunnels
Drag
Surface roughness
Drag coefficient
Aspect ratio
Experiments
Air

All Science Journal Classification (ASJC) codes

  • Environmental Engineering

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Wind tunnel experiment on effect of shape of an obstacle on total drag force of regular array. / Hagishima, Aya; Tanimoto, Jun; Yamaguchi, Manato; Kikuchi, Yoshiki.

In: Journal of Environmental Engineering, Vol. 76, No. 663, 01.05.2011, p. 485-492.

Research output: Contribution to journalArticle

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