On the effect of wind direction and urban surroundings on natural ventilation of a large semi-enclosed stadium

Hooff, van Taj Twan; Blocken, Bje Bert

doi:10.1016/j.compfluid.2010.02.004

Cited by 169 publications

(109 citation statements)

References 28 publications

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“…This technique allows full control of the size and shape of every grid cell and has been used successfully in previous studies for simple and complex building and urban geometries (e.g. [47,48,59,[80][81][82][83]). The maximum stretching ratio is 1.2 and the first cell height is 2 mm at the building wall.…”

Section: Computational Domain and Gridmentioning

confidence: 99%

“…In this paper, the coupled approach (e.g. [29,30,42,47,48,50,63,72]) is employed using the 3D [27]. For more information related to the wind-tunnel experiments the reader is referred to [27].…”

Section: Introductionmentioning

confidence: 99%

“…Finally, quite some studies focused on buildings with a pitched roof and asymmetric opening positions (group 4) (e.g. ( [37][38][39][40][41][42][43][44][45][46][47][48][49][50]). Within this group however, only one study considered a saw-tooth roof [45].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions: Impact of roof angle and opening location

Perén

Hooff

Leite

et al. 2015

Building and Environment

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151

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Section: Computational Domain and Gridmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions: Impact of roof angle and opening location

Perén

Hooff

Leite

et al. 2015

Building and Environment

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151

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“…This reduces the numerical discretisation error and allows the use of second-order discretisation schemes without compromising convergence. This technique has been successfully applied in other CFD studies to model complex urban areas (van Hooff and Blocken 2010a, 2010b, Montazeri et al 2013, Toparlar et al 2015, Gromke et al 2015 and building geometries and building component details (van Hooff et al 2011a(van Hooff et al , 2011b. For the present simulation, the grid resolution in the vertical direction is 2.5 m for the first 10 m, and increases gradually with height above 10 m. The resulting grid contains 3,984,984 control volumes and is based on a grid-sensitivity analysis focused on mean wind speed in the entrance channel.…”

Section: Computational Geometry Domain and Gridmentioning

confidence: 99%

CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain

Blocken

Hout

Dekker

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

133

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“…Papers on related and also very important topics such as urban ventilation and pedestrian-level air quality (e.g. van Hooff and Blocken 2010a, 2010b, Hang et al 2011, Hu and Yoshie 2013, validation studies (e.g. Hertwig et al 2012) and coupling of mesoscale and microscale modeling efforts (e.g.…”

Section: Scopementioning

confidence: 99%

CFD simulation of pedestrian-level wind conditions around buildings: Past achievements and prospects

Blocken

Stathopoulos

2013

Journal of Wind Engineering and Industrial Aerodynamics

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Context of Virtual Special IssueA Virtual Special Issue (VSI) is a Special Issue that consists of previously published papers in a given journal. The aim of a VSI is to identify and group a coherent set of such papers and to provide some post-publication perspectives. This VSI deals with papers on CFD simulation of pedestrian-level wind conditions around buildings, published in the Journal of Wind Engineering and Industrial Aerodynamics (JWEIA).Wind comfort and wind safety for pedestrians are important requirements for urban areas. In particular near high-rise buildings, high wind velocities are often introduced at pedestrian level that can be experienced as uncomfortable or even dangerous. Uncomfortable wind conditions have proven detrimental to the success of new buildings (Durgin and Chock 1982). Wise (1970) reports about shops that are left untenanted because of the windy environment that discouraged shoppers. Lawson and Penwarden (1975) report dangerous wind conditions to be responsible for the death of two old ladies after being blown over by sudden wind gusts near a high-rise building. Many urban authorities nowadays recognize the importance of pedestrian wind comfort and wind safety and require such studies before granting building permits for new buildings or new urban areas.Studies of wind comfort and wind safety involve combining statistical meteorological data with aerodynamic information and with wind comfort and wind safety criteria. The aerodynamic information is needed to transform the statistical meteorological data from the weather station (meteorological site) to the location of interest at the building site. At this location, the transformed statistical data are combined with the comfort and safety criteria to assess local wind comfort and safety. This procedure is schematically depicted in Figure 1. Wind statistics at the meteorological site can be expressed as potential wind speed (U pot ), i.e. corresponding to a terrain with aerodynamic roughness length z 0 = 0.03 m. The aerodynamic information usually consists of two parts: the terrain-related contribution and the design-related contribution. The terrain-related contribution represents the change in wind statistics from the meteorological site to a reference location near the building site, i.e. the transformation of U pot to U 0 . The design-related contribution represents the change in wind statistics due to the local urban design, i.e. the transformation of U 0 to the local wind speed U. Information on transformation procedures to determine terrain-related contributions can be found in e.g. Simiu and Scanlan (1986) and Verkaik (2006). The design-related contribution (i.e. the wind-flow conditions around the buildings at the building site) can be obtained by either wind-tunnel modelling or CFD. Wind comfort and safety criteria generally exist of a threshold value of the wind speed and an allowed exceedance probability of this threshold.

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On the effect of wind direction and urban surroundings on natural ventilation of a large semi-enclosed stadium

Cited by 169 publications

References 28 publications

CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions: Impact of roof angle and opening location

CFD analysis of cross-ventilation of a generic isolated building with asymmetric opening positions: Impact of roof angle and opening location

CFD simulation of wind flow over natural complex terrain: Case study with validation by field measurements for Ria de Ferrol, Galicia, Spain

CFD simulation of pedestrian-level wind conditions around buildings: Past achievements and prospects

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