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The Effect of Tree-Planting Patterns on the Microclimate within a Courtyard

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  • Junying Li

    (School of Life Science, Huizhou University, Huizhou 516007, China
    Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
    College of Forestry, Shenyang Agriculture University, Shenyang 110866, China)

  • Jiying Liu

    (Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
    School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China)

  • Jelena Srebric

    (Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA)

  • Yuanman Hu

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China)

  • Miao Liu

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China)

  • Lei Su

    (College of Art and Design, Zhongshan Institute, University of Electronic Science and Technology, Zhongshan 528402, China)

  • Shunchang Wang

    (College of Forestry, Shenyang Agriculture University, Shenyang 110866, China)

Abstract

Current landscape design within a courtyard usually does not take into account the influence of the tree-planting pattern, which has an important influence on the outdoor microclimate and occupants’ thermal comfort. At present, the extent of the influence on the microclimate has not yet been made clear. Computational Fluid Dynamics (CFD) was employed to run this model under hot summer weather conditions. Field measurements validated the performance of the CFD model. This study conducted numerical simulations for five different tree-planting patterns, including (i) focused tree-planting (F), (ii) cornered tree-planting (C), (iii) multi-row tree-planting (R), (iv) surround tree-planting (S) and (v) no tree-planting (N). Our study found that the tree-planting pattern affects both the distribution of air temperature and the degree of local heat transfer. Specifically, the C, S and N patterns allow for higher ventilation in the studied courtyard, while the F and R patterns cause lower wind velocities and associated courtyard ventilation. The average air temperature for the C pattern is lower during summer afternoons than the other patterns. The wind flow pattern in the studied courtyard does not vary significantly with different tree-planting patterns. Nevertheless, the general relative humidity in the courtyard does not vary significantly with different tree-planting patterns, except for the N pattern. A future analysis is needed to investigate the mechanisms of the phenomenon.

Suggested Citation

  • Junying Li & Jiying Liu & Jelena Srebric & Yuanman Hu & Miao Liu & Lei Su & Shunchang Wang, 2019. "The Effect of Tree-Planting Patterns on the Microclimate within a Courtyard," Sustainability, MDPI, vol. 11(6), pages 1-21, March.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:6:p:1665-:d:215408
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    References listed on IDEAS

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    Cited by:

    1. Jiying Liu & Mohammad Heidarinejad & Saber Khoshdel Nikkho & Nicholas W. Mattise & Jelena Srebric, 2019. "Quantifying Impacts of Urban Microclimate on a Building Energy Consumption—A Case Study," Sustainability, MDPI, vol. 11(18), pages 1-21, September.

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