CFD-Based Wind Assessment for Suburban Buildings. The Case Study of Aarhus University, Herning Campus

Strasszer, David; Xydis, George

doi:10.3389/fenrg.2020.539095

Cited by 4 publications

(4 citation statements)

References 43 publications

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“…The number of divisions for these schemes was 14,520, 17,664, 22,818, 34,210, and 44,404 grid cells, respectively. To investigate the grid independence (Strasszer and Xydis, 2020;Yuan et al, 2020;Wang Z. et al, 2021), the measurement point was chosen at the center of the deflector opening. Figure 8 illustrates the wind speed variations at the measurement point for different grid numbers.…”

Section: Mesh Generationmentioning

confidence: 99%

Influence of deflectors on indoor airflow velocity distribution under natural ventilation conditions

Wang,

Jin,

Cheng

2024

Front. Energy Res.

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Deflectors offer a cost-effective solution for enhancing airflow distribution. The purpose of this paper is to investigate the effect of the deflector on the indoor airflow velocity distribution under natural ventilation conditions. The results obtained from numerical simulations are validated through experimental measurements using a reduced-scale model. Subsequently, the validated reduced-scale numerical model was extended to full-size rooms. A full-size numerical simulation method is used to analyze the effect of no deflector, deflectors with different opening width-to-height ratios and deflectors with different opening shapes on the percentage of indoor velocity partitions under natural ventilation conditions. The findings reveal that the judicious installation of deflectors can enhance indoor airflow velocity distribution and increase the percentage of the indoor comfort zone. Deflectors with different opening width-to-height ratios exert distinct influences on indoor airflow velocity distribution. When the deflector opening width-to-height ratio is set at 7/6, the indoor comfort zone percentage reaches its maximum at 75.98%. Furthermore, the shape of the deflector’s opening significantly affects indoor airflow velocity distribution, and when the opening shape is a rhombus shape of 4.00 cm × 9.00 cm, the proportion of indoor velocity comfort zone is the largest, which is 75.56%. This study provides a reference for the design and practice of natural ventilation in buildings.

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Section: Mesh Generationmentioning

confidence: 99%

Influence of deflectors on indoor airflow velocity distribution under natural ventilation conditions

Wang,

Jin,

Cheng

2024

Front. Energy Res.

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“…Indoor natural ventilation and air quality [1,15,16] Outdoor wind and pollutant diffusion [17][18][19][20] Pedestrian wind [21][22][23][24][25] Ventilation and energy saving [26] Wind energy utilization [27,28] Campus thermal comfort Indoor ventilation and thermal comfort [29][30][31][32] Outdoor wind and thermal comfort [33][34][35] Campus microclimate, mainly involving the wind environment Based on regional climate characteristics and layout form [36,37] Microclimate evaluation [38] Campus wind environment and health Health-related performance [39,40] Influencing factors of natural ventilation on campus Influence of natural ventilation on the façade of the building [41] Influence of atrium on natural ventilation [42] Influence of courtyard on natural ventilation [43] Influence of campus building layout on ventilation [44] Influence of human behavior mode on ventilation [45][46][47] Campus wind simulation method CFD numerical simulations based on different software [48][49][50] Simulation comparison of two turbulence models (RAN and LES) [51] Wind tunnel experiment [52] Fluent, Phoenics, OpenFOAM, and other commonly used CFD simulation software are among those found in the literature on wind environment simulations of campus buildings....…”

Section: Campus Natural Ventilationmentioning

confidence: 99%

Application of an Architect-Friendly Digital Design Approach to the Wind Environment of Campus Dormitory Buildings

Liu

Zhang

et al. 2023

Sustainability

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Good natural ventilation can improve the comfort of campus dormitories and effectively avoid pollution caused by particle accumulation. Parametric design can effectively address the feedback and connection between building performance analysis and design. This study employs an architect-friendly digital design method based on the Rhino/Grasshopper parametric platform. It takes campus dormitories in the cold region as a case, using parameterized digital tools, such as the Butterfly plugin to simulate wind performance under three influencing factors: building layout, opening position, and building façade (shape and spoiler). Finally, the optimal design that can simultaneously meet the local winter and summer wind environment requirements is selected and validated. In addition, the reasonable design of external balconies and bathrooms in a dormitory can form buffer spaces to achieve effective wind shelter and insulation effects in cold regions. This article describes how to use digital tools to quickly and easily optimize the design of building forms based on wind simulations to promote campus sustainability.

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“…How extraction of power from the wind is possible we need some definitions; the conservation of linear momentum and Bernoullis principle were used to arrive at the Betz limit. Comprehensive model developed by Schmitz for the flow in the rotor plane which was based on law of conservation of angular momentum [18]. This method for power calculation will be reviewed in the following section and it will be used to determine the most efficient chord length and pitch angle.…”

Section: Design Of Blade Proceduresmentioning

confidence: 99%

Design and Optimization of Portable Small Scale Horizontal Axis Wind Turbine

Sherwa,

Bashir,

Wattoo

et al. 2021

Int. j. technol. eng. stud.

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Large-scale Wind Turbines (LSWTs) are under study for a considerable length of time yet just a couple studies are done on the Small Scale Wind Turbines (SSWTs) particularly for the applications near ground level where wind speed is moderate all together of few meters for each second. The goal of this venture is to outline a little wind turbine that is upgraded for the necessities that accompanied private utilization. The outline procedure incorporates the choice of the wind turbine type and the determination of the blade aerofoil, pitch angle distribution along the radius, and chord length distribution along the radius. The pitch angle and chord length distributions are optimized based on conservation of angular momentum and theory of aerodynamic forces on an aerofoil. Blade Element Momentum (BEM) theory is first inferred and afterward used to direct a parametric review that will decide whether the improved estimations of blade pitch and chord length makes the most productive blade geometry. At last, at least two unique aerofoils will be dissected to figure out that which aerofoil makes the most effective wind-turbine-blade. Afterwards, CFD investigation of the wind turbine is led in Ansys Fluent. The project incorporates a dialog of vital limitations in wind-turbine cutting edge configuration for boosting proficiency.

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CFD-Based Wind Assessment for Suburban Buildings. The Case Study of Aarhus University, Herning Campus

Cited by 4 publications

References 43 publications

Influence of deflectors on indoor airflow velocity distribution under natural ventilation conditions

Influence of deflectors on indoor airflow velocity distribution under natural ventilation conditions

Application of an Architect-Friendly Digital Design Approach to the Wind Environment of Campus Dormitory Buildings

Design and Optimization of Portable Small Scale Horizontal Axis Wind Turbine

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