Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport

Yasuyuki Ishida; Yoshinobu Endo; Akashi Mochida; Taichi Shirasawa; Ryuichiro Yoshie; Hideyuki Tanaka

doi:10.3130/AIJE.85.1005

Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport

Yasuyuki Ishida, Yoshinobu Endo, Akashi Mochida, Taichi Shirasawa, Ryuichiro Yoshie, Hideyuki Tanaka

ENG - Architecture and Building Science

Research output: Contribution to journal › Article › peer-review

Abstract

Non-uniformity of building height has the effect of improving the quality of outdoor environment by increasing wind velocity at the pedestrian-level within a focused urban district. However, the urban district with non-uniform height causes more momentum loss of streamwise wind than an urban district with uniform height. Consequently this leads to decreased wind velocity in leeward areas of the focused area. In this study, LESs were applied to flowfields in two districts consisting of rectangular buildings with uniform and non-uniform heights, and the influence of the non-uniformity on drag force of urban district and streamwise momentum transport was quantitatively evaluated.

Original language	English
Pages (from-to)	1005-1015
Number of pages	11
Journal	Journal of Environmental Engineering (Japan)
Volume	85
Issue number	778
DOIs	https://doi.org/10.3130/AIJE.85.1005
Publication status	Published - 2020 Dec

Keywords

Drag force
Highly dense urban district
Large-eddy simulation
Momentum transport
Non-uniformity of building height

ASJC Scopus subject areas

Environmental Engineering

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10.3130/AIJE.85.1005

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Ishida, Y., Endo, Y., Mochida, A., Shirasawa, T., Yoshie, R., & Tanaka, H. (2020). Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport. Journal of Environmental Engineering (Japan), 85(778), 1005-1015. https://doi.org/10.3130/AIJE.85.1005

Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport. / Ishida, Yasuyuki; Endo, Yoshinobu; Mochida, Akashi et al.
In: Journal of Environmental Engineering (Japan), Vol. 85, No. 778, 12.2020, p. 1005-1015.

Research output: Contribution to journal › Article › peer-review

Ishida, Y, Endo, Y, Mochida, A, Shirasawa, T, Yoshie, R & Tanaka, H 2020, 'Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport', Journal of Environmental Engineering (Japan), vol. 85, no. 778, pp. 1005-1015. https://doi.org/10.3130/AIJE.85.1005

Ishida Y, Endo Y, Mochida A, Shirasawa T, Yoshie R, Tanaka H. Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport. Journal of Environmental Engineering (Japan). 2020 Dec;85(778):1005-1015. doi: 10.3130/AIJE.85.1005

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Les analysis of impact of non-uniformity of building height in highly dense urban district on wind environment (part 1): Quantitative evaluation of drag force of urban district and streamwise momentum transport

Abstract

Keywords

ASJC Scopus subject areas

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