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The Effects of the Layouts of Vegetation and Wind Flow in an Apartment Housing Complex to Mitigate Outdoor Microclimate Air Temperature

Author

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  • Mengyu Zhang

    (Department of Urban Design and Studies, Chung-ang University, Seoul 06974, Korea)

  • Woongkyoo Bae

    (Department of Urban Design and Studies, Chung-ang University, Seoul 06974, Korea)

  • Jeeyeop Kim

    (Department of Architecture, Ajou University, Suwon 16499, Korea)

Abstract

Previous studies have demonstrated that vegetation and increased air flow can mitigate air temperature by employing numerical models, satellite remote sensing or Computational Fluid Dynamics simulations. This study aimed to examine how layouts of vegetation space and wind flow affect microclimate air temperature, which directly affects city dwellers’ thermal comfort in summer, in a real apartment housing complex in Seoul, South Korea. To do this, a Reynolds-averaged Navier–Stokes model was utilized, combined with a finite volume method CFD simulation, and which measured transpirational cooling effects of vegetation by comprehensively considering air humidity by transpiration, as well as wind flow of the surroundings, to reflect actual conditions of urban environments. Based on the computational model, nine scenarios including elevated building designs were simulated. The findings of this study are as follows: First, different layouts of vegetation and wind flow clearly affected microclimate air temperature in the housing complex. Second, when the total area of vegetation was the same, it was more effective to reduce air temperature by placing it in small units rather than concentrating it in one place, and placing small vegetation spaces close to buildings was better than locating them between buildings. Third, it was apparent that an elevated space works as a wind path, leading to increasing wind velocity. However, it was revealed that wind flow does not always positively affect hot temperatures.

Suggested Citation

  • Mengyu Zhang & Woongkyoo Bae & Jeeyeop Kim, 2019. "The Effects of the Layouts of Vegetation and Wind Flow in an Apartment Housing Complex to Mitigate Outdoor Microclimate Air Temperature," Sustainability, MDPI, vol. 11(11), pages 1-20, May.
  • Handle: RePEc:gam:jsusta:v:11:y:2019:i:11:p:3081-:d:235971
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    References listed on IDEAS

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    1. Sukjin Jung & Seonghwan Yoon, 2017. "Deduction of Optimum Surface Design Factors for Enhancement of Outdoor Thermal Environment in a Micro-Scale Unit," Sustainability, MDPI, vol. 9(8), pages 1-26, August.
    2. Luis Ma. Bo-ot & Yao-Hong Wang & Che-Ming Chiang & Chi-Ming Lai, 2012. "Effects of a Green Space Layout on the Outdoor Thermal Environment at the Neighborhood Level," Energies, MDPI, vol. 5(10), pages 1-13, September.
    3. Yeri Choi & Sugie Lee & Hyunbin Moon, 2018. "Urban Physical Environments and the Duration of High Air Temperature: Focusing on Solar Radiation Trapping Effects," Sustainability, MDPI, vol. 10(12), pages 1-14, December.
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    Cited by:

    1. Silvia Croce & Elisa D’Agnolo & Mauro Caini & Rossana Paparella, 2021. "The Use of Cool Pavements for the Regeneration of Industrial Districts," Sustainability, MDPI, vol. 13(11), pages 1-24, June.

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