Wind tunnel study of pedestrian level wind environment around tall buildings: Effects of building dimensions, separation and podium

Tsang, Chun Wai; Kwok, K.C.S.; Hitchcock, Peter

doi:10.1016/j.buildenv.2011.08.014

Cited by 173 publications

(111 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to other anemometers, an Irwin probe has a small volume and can be easily fixed onto the surface; therefore, multi-point and wide range wind speed measurements can be conducted while not affecting the main wind flow patterns. The Irwin probe has been proven to be satisfactory for practical use in wind tunnel studies [5,[12][13][14].…”

Section: Surface Wind Sensor (Irwin Probe)mentioning

confidence: 99%

“…Tsang et al [5] explored the effects of different building dimensions, spacing arrangements, and podiums on the pedestrian-level wind environment around buildings. The arrangement spacing was set at four parallel buildings with dimensions of 25 m (width) × 25 m (depth) × 125 m (height), and the adjacent spacing of 0, 6.25, 12.5, 18.75, and 25 m for the wind tunnel testing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wind Tunnel Studies of a Pedestrian-Level Wind Environment in a Street Canyon between a High-Rise Building with a Podium and Low-Level Attached Houses

Kuo

Tzeng

Ho³

et al. 2015

Energies

View full text Add to dashboard Cite

Abstract:The pedestrian-level wind environment quality in street canyons formed by high-rise buildings and other low-level buildings could be affected by multiple factors, such as the height and geometry of the surrounding buildings, street width, wind direction, and wind speed. This study conducted wind tunnel experiments to determine the characteristics of the pedestrian-level wind environment in street canyons under different conditions, including different street widths, podium heights, and approaching wind directions. The experimental results revealed that the effects of the street canyon width on the pedestrian-level wind in a street canyon can be categorized into three different flow regimes. A higher podium creates stronger wind speeds of the flow within the street canyon, and different approaching wind directions change the high-wind-speed zone within the street canyon accordingly.

show abstract

Section: Surface Wind Sensor (Irwin Probe)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Studies of a Pedestrian-Level Wind Environment in a Street Canyon between a High-Rise Building with a Podium and Low-Level Attached Houses

Kuo

Tzeng

Ho³

et al. 2015

Energies

View full text Add to dashboard Cite

show abstract

“…Tsang et al [17] studied the pedestrian-level wind environment around high-rise buildings using wind tunnel tests, and the results showed that, for a single building, increasing the building width enlarges the area of low wind speed zones, and increasing building height is conducive to natural air ventilation at pedestrian level. However, increasing building height will lead to weak natural air ventilation when the buildings are separated by a distance less than half of the building width-the podiums will seriously impede natural air ventilation, and worsen the pedestrian comfort around buildings.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Residential Area Building Layout on Outdoor Wind Environment at the Pedestrian Level in Severe Cold Regions of China

et al. 2017

View full text Add to dashboard Cite

Abstract:In recent years, there has been a frequent occurrence of extremely cold conditions which has had a serious impact on the life of residents of buildings in various locations around the world. However, there have only been a very limited number of studies on the effects of residential area building layout on the winter wind environments, which led to a lack of quantitative guidance for residential area planning in severely cold regions. This study aims to reveal the relationship between (1) the residential areas' building density, floor area ratio, wind projection angle, average building height, and relative position of high-rise buildings, and; (2) the mean wind velocity ratio at pedestrian level in severe cold regions. In this study, the pedestrian-level outdoor wind environments in 24 typical residential areas of Harbin, China, are simulated using ENVI-met software. The results show that the relative position of high-rise buildings in multi-high-level mixed residential areas has little influence on the mean wind velocity ratio, and the maximum difference is 0.04. The factors of building layout have little influence on the mean wind velocity ratio of multistory residential areas. However, a significant linear correlation exists between the mean wind velocity ratio of high-rise residential areas and both the building density and wind projection angle. The prediction model of the mean pedestrian-level wind velocity ratio was then established.

show abstract

“…This researcher evaluated the construction experience of a village in site selection, layout, and landscape adaptation to wind environment, but did not study the impact of building density on village wind environment. Tsang [17] studied high-rise buildings that affect pedestrian wind environment and reported that high and wide buildings have an adverse impact on wind environment. Macroeconomic research has not been conducted.…”

Section: State Of the Artmentioning

confidence: 99%

CFD Simulation Analysis of Building Density on Residential Wind Environment

Hu¹,

Cheng²,

Qian³

2018

JESTR

View full text Add to dashboard Cite

With the rapid urbanization and expansion of construction demands in China, the continuously increasing density of residential buildings has led to outdoor pedestrian discomfort in residential wind environment. To analyze the relationship between residential building density and wind environment, simulation cases of residential buildings with different building densities were presented in this study. First, the wind environment characteristics of residential districts with different building densities were established via computer numerical simulation. Second, wind speed ratio (WSR) and age of air (AA) distribution were calculated at pedestrian height. Finally, the quantitative relationship between residential outdoor wind environment and building density was proposed. Results demonstrate a negative linear correlation between the building density and outdoor mean wind speed ratio (MWSR) of residential districts and a positive linear relationship between building density and mean age of air (MAA). When residential building density increased from 0.18 to 0.32, the MWSR in the district decreased by 0.18, whereas MAA increased by 58.63 s. As residential building density increases, the WSR within the residential district decreases and the age of air (AA) increases, which affect the outdoor comfort of residents. This study provides references for improving the wind environment of high-density residential districts and for optimizing residential layout planning.

show abstract

Wind tunnel study of pedestrian level wind environment around tall buildings: Effects of building dimensions, separation and podium

Cited by 173 publications

References 17 publications

Wind Tunnel Studies of a Pedestrian-Level Wind Environment in a Street Canyon between a High-Rise Building with a Podium and Low-Level Attached Houses

Wind Tunnel Studies of a Pedestrian-Level Wind Environment in a Street Canyon between a High-Rise Building with a Podium and Low-Level Attached Houses

The Effects of Residential Area Building Layout on Outdoor Wind Environment at the Pedestrian Level in Severe Cold Regions of China

CFD Simulation Analysis of Building Density on Residential Wind Environment

Contact Info

Product

Resources

About