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Numerical Investigation of the Wind and Thermal Conditions in Sky Gardens in High-Rise Buildings

Author

Listed:
  • Murtaza Mohammadi

    (Department of Architecture and Built Environment, University of Nottingham, Nottingham NG7 2RD, UK)

  • John Kaiser Calautit

    (Department of Architecture and Built Environment, University of Nottingham, Nottingham NG7 2RD, UK)

Abstract

High-rise buildings are known to be highly energy intensive, adding stress on already stressed resources. Alternatively, designers are looking at passive strategies and investing in architectural elements, such as sky gardens, which could improve the performance of buildings. Sky gardens are green areas located in a building which are exposed to the outdoors. They could provide multifaceted improvements in buildings by introducing environmental benefits to occupants and altering microclimate. This study aims to determine the wind comfort and thermal condition in sky gardens in high-rise buildings using numerical modelling. Different geometrical configurations of sky gardens were simulated and analysed. Based on the initial results, the study reveals that sky gardens can generate high wind velocities of the order ~10 m/s when located on a high-rise building. The addition of features such as trees and other architectural elements, which can act as a buffer, can help attenuate the high wind speeds and creating habitable spaces. The reduction varies 50%–80%, depending on the location and spatial domain of the sky garden. Furthermore, the study also investigated the reduction in air temperature due to the addition of trees, which can further reduce temperature in hot weather.

Suggested Citation

  • Murtaza Mohammadi & John Kaiser Calautit, 2019. "Numerical Investigation of the Wind and Thermal Conditions in Sky Gardens in High-Rise Buildings," Energies, MDPI, vol. 12(7), pages 1-33, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:7:p:1380-:d:221465
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    References listed on IDEAS

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    1. Yang, An-Shik & Juan, Yu-Hsuan & Wen, Chih-Yung & Chang, Chao-Jui, 2017. "Numerical simulation of cooling effect of vegetation enhancement in a subtropical urban park," Applied Energy, Elsevier, vol. 192(C), pages 178-200.
    2. Jomehzadeh, Fatemeh & Nejat, Payam & Calautit, John Kaiser & Yusof, Mohd Badruddin Mohd & Zaki, Sheikh Ahmad & Hughes, Ben Richard & Yazid, Muhammad Noor Afiq Witri Muhammad, 2017. "A review on windcatcher for passive cooling and natural ventilation in buildings, Part 1: Indoor air quality and thermal comfort assessment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 736-756.
    3. Hughes, Ben Richard & Calautit, John Kaiser & Ghani, Saud Abdul, 2012. "The development of commercial wind towers for natural ventilation: A review," Applied Energy, Elsevier, vol. 92(C), pages 606-627.
    Full references (including those not matched with items 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. Hao Sun & Carlos Jimenez-Bescos & Murtaza Mohammadi & Fangliang Zhong & John Kaiser Calautit, 2021. "Numerical Investigation of the Influence of Vegetation on the Aero-Thermal Performance of Buildings with Courtyards in Hot Climates," Energies, MDPI, vol. 14(17), pages 1-25, August.
    3. Majed Abuseif & Karine Dupre & Ruby N. Michael, 2022. "Trees on Buildings: A Tree Selection Framework Based on Industry Best Practice," Land, MDPI, vol. 12(1), pages 1-23, December.

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