Turbulent measurments of the flow field around a high-rise building

Yang, Meng; Hibi, Kazuki

doi:10.5359/jawe.1998.76_55

Cited by 88 publications

(64 citation statements)

References 3 publications

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“…This benchmark case is an isolated building of aspect ratio 1:1:2 placed within an atmospheric boundary layer, tested in a wind tunnel by Meng and Hibi (1998). Fig.…”

Section: Description Of the Case Study And Simulation Detailsmentioning

confidence: 99%

“…Table 1 presents the boundary conditions imposed for all the variables at each boundary of the simulation domain. The inlet profiles, used in the wind tunnel experiment of Meng and Hibi (1998), are shown in Fig. 2.…”

Section: Description Of the Case Study And Simulation Detailsmentioning

confidence: 99%

“…In order to compare the simulation results with experimental values, the benchmark case A of the Architectural Institute of Japan (Guidebook for Practical Applications of CFD to Pedestrian Wind Environment around Buildings, 2013) is used. This benchmark case is an isolated building of aspect ratio 1:1:2 tested in a wind tunnel by Meng and Hibi (1998).…”

Section: Introductionmentioning

confidence: 99%

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Roof region dependent wind potential assessment with different RANS turbulence models

Toja-Silva

Peralta

López-García

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

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The analysis of the wind flow around buildings has a great interest from the point of view of the wind energy assessment, pollutant dispersion control, natural ventilation and pedestrians wind comfort and safety. Since LES turbulence models are computationally time consuming when applied to real geometries, RANS models are still widely used. However, RANS models are very sensitive to the chosen turbulence parametrisation and the results can vary according to the application. In this investigation, the simulation of the wind flow around an isolated building is performed using various types of RANS turbulence models in the open source code OpenFOAM, and the results are compared with benchmark experimental data. In order to confirm the numerical accuracy of the simulations, a grid dependency analysis is performed and the convergence index and rate are calculated. Hit rates are calculated for all the cases and the models that successfully pass a validation criterion are analysed at different regions of the building roof, and the most accurate RANS models for the modelling of the flow at each region are identified. The characteristics of the wind flow at each region are also analysed from the point of view of the wind energy generation, and the most adequate wind turbine model for the wind energy exploitation at each region of the building roof is chosen.

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“…This benchmark case is an isolated building of aspect ratio 1:1:2 placed within an atmospheric boundary layer, tested in a wind tunnel by Meng and Hibi (1998). Fig.…”

Section: Description Of the Case Study And Simulation Detailsmentioning

confidence: 99%

Section: Description Of the Case Study And Simulation Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Roof region dependent wind potential assessment with different RANS turbulence models

Toja-Silva

Peralta

López-García

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…Toja-Silva et al [18] have empirically found the following expression to obtain the good agreement of the recirculation distance on the building roof with the experimental data of [19]:…”

Section: Governing Equations Turbulence Modeling and Computational Smentioning

confidence: 99%

“…We have successfully validated the modified Durbin turbulence model used in this investigation in Toja-Silva et al [18] by studying the benchmark Case A of the Architectural Institute of Japan [23]. This benchmark case is an isolated building of an aspect ratio of 1:1:2 placed within an atmospheric boundary layer wind tunnel, tested by Meng and Hibi [19]. The recirculation distance on the roof found in the experiment was well matched by the simulations, and hit rates of HR U = 87.5% and HR k = 75.0% were obtained [18].…”

Section: Governing Equations Turbulence Modeling and Computational Smentioning

confidence: 99%

On Roof Geometry for Urban Wind Energy Exploitation in High-Rise Buildings

et al. 2015

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The European program HORIZON2020 aims to have 20% of electricity produced by renewable sources. The building sector represents 40% of the European Union energy consumption. Reducing energy consumption in buildings is therefore a priority for energy efficiency. The present investigation explores the most adequate roof shapes compatible with the placement of different types of small wind energy generators on high-rise buildings for urban wind energy exploitation. The wind flow around traditional state-of-the-art roof shapes is considered. In addition, the influence of the roof edge on the wind flow on high-rise buildings is analyzed. These geometries are investigated, both qualitatively and quantitatively, and the turbulence intensity threshold for horizontal axis wind turbines is considered. The most adequate shapes for wind energy exploitation are identified, studying vertical profiles of velocity, turbulent kinetic energy and turbulence intensity. Curved shapes are the most interesting building roof shapes from the wind energy exploitation point of view, leading to the highest speed-up and the lowest turbulence intensity.

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Finite Element Model for Wind Comfort Around a Tall Building: A Case Study of Tower of Qazaqstan

Narbayev¹

2022

Computational Science and Its Applications – ICCSA 2022 Workshops

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Pedestrian wind comfort plays an essential role in the urban environment. In our work, we consider a model obtained using Computational Fluid Dynamics (CFD) around a tall building. Our focus is the Tower of Qazaqstan or Abu Dhabi Plaza in Nur-Sultan city (Kazakhstan), which will be the tallest building in Central Asia with a height of 310.8 m. We investigated the effect of the wind velocity on pedestrians by solving the incompressible time-dependent Navier-Stokes equations in the deal.II library by the Finite Element Method (FEM) using the projection method. We present numerical simulation results for various scenarios. It has been found that the velocity profile can vary in the domain that creates different pedestrian comfort conditions including the exceeded category at places dedicated to pedestrian walking.

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Turbulent measurments of the flow field around a high-rise building

Cited by 88 publications

References 3 publications

Roof region dependent wind potential assessment with different RANS turbulence models

Roof region dependent wind potential assessment with different RANS turbulence models

On Roof Geometry for Urban Wind Energy Exploitation in High-Rise Buildings

Finite Element Model for Wind Comfort Around a Tall Building: A Case Study of Tower of Qazaqstan

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