Study on the influence of the coupling of wind direction and branch angle on the ventilation performance of trigeminal street canyon

Zeqin Liu; Yang Yang; Qiuning Huo; Min Dong; Huiran Zhen; Yongjie Yu; Taojie Zhao

doi:10.1117/12.2638785

17 May 2022 Study on the influence of the coupling of wind direction and branch angle on the ventilation performance of trigeminal street canyon

Zeqin Liu, Yang Yang, Qiuning Huo, Min Dong, Huiran Zhen, Yongjie Yu, Taojie Zhao

Author Affiliations +

Proceedings Volume 12259, 2nd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2022); 122594S (2022) https://doi.org/10.1117/12.2638785
Event: 2nd International Conference on Applied Mathematics, Modelling, and Intelligent Computing, 2022, Kunming, China

Abstract

The method of numerical simulation was carried out to study the influence of the angle between the branches of the trigeminal street valley at 30°, 45°, 60°and 90° on the street valley wind environment and CO concentration to take Tianjin as an example under the action of three dominant wind directions in summer, and to obtain the ventilation performance of the street valley. Overall, the PFR and NEV values under the south wind were higher than those under the southeast and southwest winds, so the ventilation effect under the action of south wind was the best, and the southwest wind was the most unfavorable condition. The PFR and NEV values under the action of the three wind directions were the maximum values among the four cases under the angle of 30°, which was the best ventilation layout among the four cases, and the most unfavorable condition was at 60°.

Citation Download Citation

Zeqin Liu, Yang Yang, Qiuning Huo, Min Dong, Huiran Zhen, Yongjie Yu, and Taojie Zhao "Study on the influence of the coupling of wind direction and branch angle on the ventilation performance of trigeminal street canyon", Proc. SPIE 12259, 2nd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2022), 122594S (17 May 2022); https://doi.org/10.1117/12.2638785

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