CFD simulations of wind-driven rain on typical football stadium configurations in China's hot-summer and cold-winter zone

Shi, Ligang; Tao, Lulu; Zhang, Yuanxue; Li, Yuqing; Jiang, Xintong; Yang, Zhaojing; Qi, Xinzhu; Qiu, Jinghan

doi:10.1016/j.buildenv.2022.109598

Cited by 9 publications

(5 citation statements)

References 41 publications

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Section: Discussionmentioning

confidence: 99%

“…In ENVI-met, simulations were conducted to analyze the microclimate effects of the three VGS design schemes compared to the original case study model without any greenery. Existing studies have focused on either the mitigating effects of vertical greenery on UHI or the impact of WDR on buildings [72,73] without studying the combination of both factors. This study first integrated WDR with a VGS, i.e., determined the location of a VGS based on the façade's WDR-harvesting potential, which is the novelty of this research.…”

Section: Discussionmentioning

confidence: 99%

“…Although a large number of researchers have emphasized the cooling effect of VGSs on UHI or the WDR's impact on building façades [72,73], no study has integrated WDR, VGSs, and UHI, which involves determining the VGS's location on a façade based on WDRharvesting potential for its irrigation benefit and then assessing the mitigation effect of the VGS on UHI. In terms of receptor 1 in this study, a VGS could result in temperature-reduced ranges from 0 • C to 0.76 • C, 0 • C to 0.88 • C, and 0.07 • C to 1.06 • C for Scenario 1 (17% coverage ratio), Scenario 2 (21% coverage ratio), and Scenario 3 (22% coverage ratio), respectively.…”

Section: Discussionmentioning

confidence: 99%

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The Design of Façade-Integrated Vertical Greenery to Mitigate the Impacts of Extreme Weather: A Case Study from Hong Kong

Xiang,

Tao

2023

Buildings

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Vertical greenery not only helps to cool the surfaces of buildings but, more importantly, it can also mitigate the Urban Heat Island effect. The growth of vertical greenery is highly dependent on ongoing maintenance, such as irrigation. Wind-driven rain serves as a natural source of irrigation for vertical greenery. Wind-driven rain simulation was conducted on a typical high-density and high-rise case in Hong Kong to first classify the wind-driven rain harvesting potential on the façade with very high, high, moderate, low, and very low levels. Then, Scenario 1 (very high potential), Scenario 2 (very high + high potential), and Scenario 3 (very high + high + moderate potential) regarding vertical greenery in locations with three levels of wind-driven rain harvesting potential were simulated in ENVI-met to assess its Urban Heat Island mitigation effect. The maximum temperature reduction on the street occurs between 12 p.m. and 3 p.m., indicating the greatest mitigation of the Urban Heat Island effect. Scenario 1, Scenario 2, and Scenario 3 achieve a maximum temperature reduction of 0.76 °C, 0.88 °C, and 1.06 °C, respectively, during this time period.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The Design of Façade-Integrated Vertical Greenery to Mitigate the Impacts of Extreme Weather: A Case Study from Hong Kong

Xiang,

Tao

2023

Buildings

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“…Research Object Research Approach [17] cell culture EWF model [19] Gas-liquid Cylindrical Cyclones [20] Containment cooling system [21] Containment condenser [22] Atmospheric pressure tower [15] Supersonic Separator Eulerian-Lagrangian and EWF model [23] Ultrasound separator [18] Baffle mist eliminator Discrete Phase model and EWF model [24] Football field wind-driven rain [25] Surface of nuclear power plant containment vessel Species Transport Model and EWF model [26] Natural gas station pipeline Mixture model and EWF model…”

Section: Referencementioning

confidence: 99%

Numerical Investigation of the Water-Drop Impact on Low-Drag Airfoil Using the Euler–Euler Approach and Eulerian Wall Film Model

et al. 2023

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The Eulerian Wall Film (EWF) model is a mathematical model employed to analyze the behavior of fluid films on a surface. The model has been widely adopted in various engineering applications due to its accuracy and efficiency. However, it is rarely applied in the aerospace field. The solution of the water-drop impact constitutes an indispensable prerequisite for the computation of ice accretion on the exterior of aircraft wings. In this study, we propose a novel approach for the estimation of water-drop impact on wing surfaces by integrating the Euler–Euler approach and EWF model. This approach is capable of furnishing a point of reference and a theoretical foundation for prospective water-drop impact experiments. Through comparison with pertinent experimental findings, the precision of the numerical simulation approach utilized in this paper is substantiated. Specifically, the research object is the NACA653-218 airfoil of the C-919 transport aircraft, for which the aerodynamic properties, water-drop collision, and liquid film flow characteristics during steady flight were simulated.

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“…Despite abundant research focusing on the wind flow around and through structures on flat surfaces [17][18][19], understanding the wind-induced effects on structures in complex terrains remains inadequate. Meng et al [20] conducted a CFD simulation for a tall building with a rectangular section in relatively complex topography.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Wind Flow and Speedup Effect at a Towering Peak Extending out of a Steep Mountainside: Implications for Landscape Platforms

Nabil,

Guo,

Jiang

et al. 2024

Mathematics

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Wind flow over complex terrain is strongly influenced by the topographical features of the region, resulting in unpredictable local wind characteristics. This paper employs numerical simulation to study the wind flow at a towering peak extending out of a steep mountainside and the wind-induced effect on onsite landscape platforms. First, the wind flow from seven different directions is explored via 3D numerical simulations, and the wind load distribution on the platforms is highlighted. Second, a 2D numerical simulation is conducted to evaluate the wind speedup effect at the side peak, examining the influence of the side peak height and the mountainside steepness on the wind speedup factor. The numerical simulations presented in this research were validated by replicating a published numerical and experimental study. The results illustrate the amplifying and blocking effects of the surrounding topography, yielding unpredictable and nonuniform wind pressure distribution on the platforms. The presence of the side peak leads to a significant increase in the speedup factor, and the side peak height and the mountainside steepness have a moderate influence on the value of the speedup factor. Additionally, the speedup factor obtained from this study varies significantly, especially near the surface, from the recommendations of several wind load standards. Consequently, the impact of the local terrain and the wind speedup effect must be thoroughly assessed to ensure the structural integrity of structures installed at a similar topography.

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CFD simulations of wind-driven rain on typical football stadium configurations in China's hot-summer and cold-winter zone

Cited by 9 publications

References 41 publications

The Design of Façade-Integrated Vertical Greenery to Mitigate the Impacts of Extreme Weather: A Case Study from Hong Kong

The Design of Façade-Integrated Vertical Greenery to Mitigate the Impacts of Extreme Weather: A Case Study from Hong Kong

Numerical Investigation of the Water-Drop Impact on Low-Drag Airfoil Using the Euler–Euler Approach and Eulerian Wall Film Model

Numerical Investigation of Wind Flow and Speedup Effect at a Towering Peak Extending out of a Steep Mountainside: Implications for Landscape Platforms

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