Investigation of Wind Aerodynamic for Tall Buildings and Wind Tunnel Study of Pedestrian- Level Conditions Around Buildings

سال انتشار: 1396
محل انتشار: چهارمین همایش بین المللی مهندسی عمران، معماری و شهرسازی با رویکرد توسعه پایدار
کد COI اختصاصی: ACUSCONF04_081
زبان مقاله: انگلیسی
تعداد مشاهده: 289

نویسندگان

Department of Architecture Young researchers and Elite Club, Rasht Branch, Islamic Azad University Rasht, Iran

Department of Architecture Rasht Branch, Islamic Azad University Rasht, Iran

چکیده

It is well known that tall buildings affect the pedestrian environment. Tall buildings can introduce high wind speed at pedestrian level, which can lead to uncomfortable or even dangerous conditions. The purpose of this study was to determine the wind velocity at the Pedestrian-Level Conditions (PLC) of a tall building in urban environments. This paper at first, discusses wind aerodynamic investigation based on the architecture design. Then, patterns of wind flow behavior at pedestrian level and shape optimization strategies were considerate. Wind tunnel test and computational fluid dynamics simulation were conducted to study the wind characteristics at a Golsar site in Rasht. The Suggested new tall building in this research, is located in the center of the site with an area about of 11000 m2. In order to evaluate of wind velocity, the predicted results are compared with actual building specifications data to study the discrepancy between the two phases. The results of first phase for actual building specifications data showed that wind velocity more than comfortable environment (< 7 m/s). In the next phase, to reduce the vortices and wind velocity to an acceptable level of comfort, the planting of the tree around the site was used to problem solving. Moreover, frequency oscillations and wind velocity were measured; then simulation results were also compared. The findings showed that planting trees in urban environments can be as acceptable as possible, it reduces the wind velocity and its vortices at the pedesterian to the comfort level for sitting, walking and walking activities (> 6 m / s).

کلیدواژه ها

Wind aerodynamic; Tall Buildings; Wind Tunnel; Pedestrian-Level Wind (PLW); Air flow around buildings.

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