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Impact of Enclosure Boundary Patterns and Lift-Up Design on Optimization of Summer Pedestrian Wind Environment in High-Density Residential Districts

Author

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  • Zhengrong Jiang

    (College of Urban Construction, Zhejiang Shuren University, Hangzhou 310015, China)

  • Weijun Gao

    (Faculty of Environmental Engineering, The University of Kitakyushu, Fukuoka 8080135, Japan)

Abstract

A comfortable wind environment favors the sustainable development of urban residential districts and public health. However, the rapid growth of high-rise urban residential districts leads to low wind velocity environments in summer. This study examines the influence of enclosure boundary patterns and lift-up design on the wind environment and proposes an optimization strategy to improve the low wind velocity environment in residential districts in summer. A typical residential district in Hangzhou was selected; the average wind velocity, calm wind zone ratio and comfortable wind zone ratio were selected as the evaluation indexes. The wind environment for different enclosure boundary patterns and lift-up designs were obtained via computational fluid dynamics (CFD) simulations. The results indicate that the pedestrian wind environment is greatly improved in residential districts by reducing the height/width of the enclosure boundary, increasing the permeability rate and adopting a lift-up design in all buildings within residential districts. A combination of permeable railings and lift-up design is recommended; this can increase the average wind velocity and the ratio of comfortable wind zones by 70% and 200%, respectively. This study provides practical guidelines for the optimization of a low wind velocity environment in Chinese high-density residential districts in summer.

Suggested Citation

  • Zhengrong Jiang & Weijun Gao, 2021. "Impact of Enclosure Boundary Patterns and Lift-Up Design on Optimization of Summer Pedestrian Wind Environment in High-Density Residential Districts," Energies, MDPI, vol. 14(11), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:11:p:3199-:d:565608
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    References listed on IDEAS

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    Cited by:

    1. Fangliang Zhong & Hassam Nasarullah Chaudhry & John Kaiser Calautit, 2021. "Effect of Roof Cooling and Air Curtain Gates on Thermal and Wind Conditions in Stadiums for Hot Climates," Energies, MDPI, vol. 14(13), pages 1-23, July.
    2. Mark B. Luther & Igor Martek & Mehdi Amirkhani & Gerhard Zucker, 2022. "Special Issue “Environmental Technology Applications in the Retrofitting of Residential Buildings”," Energies, MDPI, vol. 15(16), pages 1-4, August.

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