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

Blocken, Bje Bert; Hout, Arne van der; Dekker, Johan; Weiler, O.M.

doi:10.1016/j.jweia.2015.09.007

Cited by 137 publications

(74 citation statements)

References 104 publications

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“…Most of the studies related to PLW environment tackle the problem based on discrete point analysis [17,24,81]. In this method, wind speed is evaluated at discrete locations.…”

Section: Assessment Methods For Pedestrian Level Wind Environmentmentioning

confidence: 99%

A review on the study of urban wind at the pedestrian level around buildings

Mittal

Sharma

Gairola

2018

Journal of Building Engineering

113

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“…Most of the studies related to PLW environment tackle the problem based on discrete point analysis [17,24,81]. In this method, wind speed is evaluated at discrete locations.…”

Section: Assessment Methods For Pedestrian Level Wind Environmentmentioning

confidence: 99%

A review on the study of urban wind at the pedestrian level around buildings

Mittal

Sharma

Gairola

2018

Journal of Building Engineering

113

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“…If the height H of this independent hill, ridge or cliff is over twice the height of the terrain within 3.22 km of the windward side, and is > 4.5 m (spot C) or 18 m (spot A or B), and this independent hill, ridge or cliff does not have any barriers of similar height within 100H or 3.22 km (the smaller value between the two is used) of the windward side, and H/L ≥ 0.2, then K can be calculated according to Equation (2). If the site conditions and locations of buildings and other structures do not meet all the conditions specified in Section 2, then K = 1.…”

Section: Cfd Simulation: Computational Settings and Parametersmentioning

confidence: 99%

“…Over the past 50 years, computational fluid dynamics (CFD) has been developed as a powerful tool for wind field evaluation (Blocken et al, 2015). Compared to wind tunnel experiments, CFD can better render the complex flow field phenomena.…”

Section: Introductionmentioning

confidence: 99%

An Example of Ecological Wisdom in Historical Settlement: The Wind Environment of Huazhai Village in Taiwan

Chu

Hsu

Hsieh

2017

Journal of Asian Architecture and Building Engineering

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During the initial developmental stage of historical settlement, residents used the principles of feng shui to locate suitable residence sites to ensure quality of life. Using Huazhai Village in Taiwan as a case study, this study explores the design philosophy of ancient Chinese people through scientific analysis. Research showed that the region was characterized by a windy climate. Therefore, a computational fluid dynamics model was used to simulate the local wind environment and restore the early architectural complex of the village. Compared to the current situation, it was demonstrated that the planning principles of the early buildings gave first priority to site selection. Second, with the village streets acting as a wind corridor, the angle of the streets was well utilized to strengthen outdoor ventilation in summer. Third, according to wind field characteristics at different locations, various opening directions and arrangement modes were applied in different areas to improve the wind field of the living environment. This ancient ecological wisdom provides current designers with a new strategy for living in harmony with nature, which may aid the design of sustainable living environments that adapt to the climate.

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“…However, only considering the FAI of a building is insufficient for considering the surface roughness length and then estimating the urban microclimate, including wind and thermal conditions. In term of CFD approach, wind and thermal conditions can be estimated within urban areas using ENVI-met [15,16] and Wind Perfect [17][18][19], for example, based on an initial meteorological dataset. However, wind conditions are difficult to determine owing to turbulence within the boundary layer.…”

Section: Introductionmentioning

confidence: 99%

Urban Roughness Estimation Based on Digital Building Models for Urban Wind and Thermal Condition Estimation—Application of the SkyHelios Model

et al. 2017

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Roughness length is a critical parameter for estimation of wind conditions, and it is therefore also relevant for the estimation of human thermal conditions in urban areas. The high density of buildings in urban areas causes large changes in land coverage, thereby increasing surface roughness. This influence atmospheric flow and also leads to a reduction in urban air ventilation, thus increasing the risk of human thermal stress. In this study, a digital building model of Tainan city was used to calculate roughness length using an approach based on Voronoi cells by applying the microclimate model, SkyHelios. The model was also used to estimate the wind conditions, including the wind speed and wind direction. For estimation of the thermal conditions, this study obtained meteorological data for air temperature, relative humidity, globe temperature, wind speed, and wind direction on two specific days (31 July 2015 and 21 January 2016). To quantify the thermal stress, the physiologically equivalent temperature (PET) was used to represent the thermal conditions. The wind conditions results obtained from the model indicate that even microscale conditions with vortices and corner flow can be represented with high precision and resolution. The thermal conditions results demonstrate that different created environments and microclimate conditions affect the thermal environment. The difference in PET can be up to 3 • C. This study confirmed that comparison of microclimate thermal conditions based on measurements and obtained from modeling using SkyHelios are in sufficient agreement and can be used in urban planning in the future.

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

Cited by 137 publications

References 104 publications

A review on the study of urban wind at the pedestrian level around buildings

A review on the study of urban wind at the pedestrian level around buildings

An Example of Ecological Wisdom in Historical Settlement: The Wind Environment of Huazhai Village in Taiwan

Urban Roughness Estimation Based on Digital Building Models for Urban Wind and Thermal Condition Estimation—Application of the SkyHelios Model

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