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Simulation Study on Outdoor Wind Environment of Residential Complexes in Hot-Summer and Cold-Winter Climate Zones Based on Entropy-Based TOPSIS Method

Author

Listed:
  • Xiang Liu

    (School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China)

  • Wanjiang Wang

    (School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China)

  • Zixuan Wang

    (School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China)

  • Junkang Song

    (School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China)

  • Ke Li

    (School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China)

Abstract

Driven by a large digital simulation environment, CFD calculation software is used to simulate test results so that they can be effectively applied to engineering practice. This paper explores the suitable outdoor wind environment for residential areas in the hot summer and the cold winter. Taking Xishan Huijing in Changsha as an example, the most unfavorable wind field environment is used as the boundary condition, and the optimal design mode for this residential area is explored based on the Butterfly platform. The research in this paper is mainly divided into five steps: (1) using Rhino 7.0 to establish a 3D model; (2) using the Butterfly 0.0.05 platform to simulate the wind field and export the data at the same time, and to realize the preview through the visualization method; (3) processing the exported simulation data and the calculation of related indices; (4) applying the entropy-based TOPSIS method on the MATLAB 2020 platform to rank the preferred scheme and obtain the corresponding index weights; and (5) using a K-means cluster analysis on SPSS 26 software to optimize the scheme. The results show that (1) the wind environment quality will be overestimated in the summer if the influence of neighboring buildings on the site is not considered, while the opposite is true in the winter, with the error of both reaching two times. (2) The weights of the indicators determined by the TOPSIS entropy weighting method indicate that wind protection in the winter should be prioritized over natural ventilation in the summer in this area. The maximum wind speed in the winter has the most significant weight, reaching 0.287, and the uniformity of the wind field in the summer is the most important, reaching 0.1102. (3) In the layout design of the residential district, the staggered layout of the 60 m high slab houses in the northern, northeastern, and northwestern directions of the site creates a better wind field environment, which attains the highest score by the TOPSIS entropy weighting method, reaching 0.1539, with the second highest score, reaching 0.1511, for the layout method. The research results will provide a scientific basis for the design of residential buildings in the hot-summer and cold-winter regions in China, and also help designers to better grasp the outdoor wind environment of residential buildings in the pre-design stage.

Suggested Citation

  • Xiang Liu & Wanjiang Wang & Zixuan Wang & Junkang Song & Ke Li, 2023. "Simulation Study on Outdoor Wind Environment of Residential Complexes in Hot-Summer and Cold-Winter Climate Zones Based on Entropy-Based TOPSIS Method," Sustainability, MDPI, vol. 15(16), pages 1-28, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:16:p:12480-:d:1218728
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    References listed on IDEAS

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