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Forests
Volume 13
Issue 3
10.3390/f13030392
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Article

Shelter Effect of Pedestrian Wind behind Row Trees in a Line Arrangement

by
Fuh-Min Fang
1,
Jen-Chieh Chang
1,
Yi-Chao Li
2,
Cheng-Yang Chung
3 and
Ming-Hsun Chan
4,*
1
Department of Civil Engineering, National Chung Hsing University, Taichung City 403302, Taiwan
2
Taiwan Building Technology Center, National Taiwan University of Science and Technology, Taipei City 106335, Taiwan
3
Aerospace Science and Technology Research Center, National Cheng Kung University, Tainan City 701401, Taiwan
4
Department of Forestry and Natural Resources, National Chiayi University, Chiayi 60004, Taiwan
*
Author to whom correspondence should be addressed.
Forests 2022, 13(3), 392; https://doi.org/10.3390/f13030392
Submission received: 10 January 2022 / Revised: 23 February 2022 / Accepted: 25 February 2022 / Published: 27 February 2022
(This article belongs to the Section Urban Forestry)
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Abstract

Flow past a single-line arrangement of evenly-spaced row trees, in an open territory, was numerically simulated under the action of a boundary-layer type of oncoming flow, with a strength of “strong breeze”, based on the Beaufort scale. By selecting Koelreuteria henryi as the demonstrated tree species, the spatial wind speed variations behind row trees at the pedestrian level, at various tree heights and tree spaces, were analyzed to investigate the corresponding downstream shelter effects from a systematic basis. Based on the results of the analyses, the tendency of stream-wise wind speed variations behind the row trees was presented so as to provide additional insights into row-tree planning for protection against ground wind. Moreover, in other cases of row trees with similar crown shapes and properties, resulting flow fields for various tree heights and tree spaces can provide referable quantitative information, which can be readily used to conduct tentative shelter effect assessments and pedestrian comfort evaluations in a preliminary planning stage.
Keywords: row trees; shelter effect; pedestrian wind; numerical simulations row trees; shelter effect; pedestrian wind; numerical simulations

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MDPI and ACS Style

Fang, F.-M.; Chang, J.-C.; Li, Y.-C.; Chung, C.-Y.; Chan, M.-H. Shelter Effect of Pedestrian Wind behind Row Trees in a Line Arrangement. Forests 2022, 13, 392. https://doi.org/10.3390/f13030392

AMA Style

Fang F-M, Chang J-C, Li Y-C, Chung C-Y, Chan M-H. Shelter Effect of Pedestrian Wind behind Row Trees in a Line Arrangement. Forests. 2022; 13(3):392. https://doi.org/10.3390/f13030392

Chicago/Turabian Style

Fang, Fuh-Min, Jen-Chieh Chang, Yi-Chao Li, Cheng-Yang Chung, and Ming-Hsun Chan. 2022. "Shelter Effect of Pedestrian Wind behind Row Trees in a Line Arrangement" Forests 13, no. 3: 392. https://doi.org/10.3390/f13030392

APA Style

Fang, F.-M., Chang, J.-C., Li, Y.-C., Chung, C.-Y., & Chan, M.-H. (2022). Shelter Effect of Pedestrian Wind behind Row Trees in a Line Arrangement. Forests, 13(3), 392. https://doi.org/10.3390/f13030392

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