نوع مقاله : مقاله پژوهشی
نویسنده
دکترای معماری، دانشکده مهندسی عمران، دانشگاه تبریز، تبریز، ایران (نویسنده مسئول).
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
The current study aimed to investigate the effect of form characteristics of a high-rise building on urban wind flow. The study sample is a neighborhood unit consisting of 9 mid-rise building blocks. The target building is a 9-storey building located in the center of the complex, and structural changes were applied to it. In the first step, a rigid building and five models with different volumetric structures were simulated, and one of the efficient modes was selected from them. Then, by changing the height of the body recesses, the effect of this variable was investigated on the wind behavior around the building. The research method in the first part is a descriptive method with library study tools, and the research strategy in the second part is quasi-experimental. CFD simulations and numerical analysis were performed using Ansys Airpak 3.0.16 software. Studies have revealed that geometric structure changes can affect the wind behavior around the building and the surrounding paths. Among the aerodynamic areas around buildings, the back-to-the-wind area and the squinch had the most, and the wind-facing areas had the least positive impact due to geometric changes. The results revealed that regular distribution of body recess in the height of the building could help ventilate the passages by increasing the surrounding wind speed. The result of these changes is, at best, an average increase of 48.33% and a maximum urban wind speed of 16.89% compared to the rigid model. Investigation of the change in the height of body recesses on urban wind potential attested that there is no direct relationship between this component and the efficiency of urban ventilation. In the meantime, models with terrace heights of 1.5 and 2.5 meters showed the best and weakest performance in amplifying the wind flow around the pedestrian level, respectively.
کلیدواژهها [English]
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