شبیه سازی جریان در تونل باد و بهینه سازی شکل آئرودینامیک ساختمان‌های بلند برای بهبود ضریب پسا تحت تأثیر نیروی باد

الموضوعات :

عبداله بقائی دائمی ¹ (باشگاه پژوهشگران جوان و نخبگان، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران.)
سید رحمان اقبالی ² (داﻧﺸﯿﺎر، داﻧﺸﮑﺪه ﻣﻌﻤﺎرى و ﺷﻬﺮﺳﺎزى، داﻧﺸﮕﺎه ﺑﯿﻦ اﻟﻤﻠﻠﻰ اﻣﺎم ﺧﻤﯿﻨﻰ ﻗﺰوﯾﻦ، اﯾﺮان)
حسین معز ³ (استاد‌‌‌‌‌‌‌‌یار، گروه مهند‌‌‌‌‌‌‌‌سی عمران، واحد‌‌‌‌‌‌‌ رشت، د‌‌‌‌‌‌انشگاه آزاد‌‌‌‌‌‌‌ اسلامی، رشت، ایران)
پیام بهرامی ⁴ (Ph.D. Optim Design Inc., Illinois Office, 2700 Patriot Blvd., Suite 250, Glenview, IL 60026, USA)

تاريخ الإرسال : 23 الخميس , شوال, 1389 تاريخ التأكيد : 23 الخميس , شوال, 1389 تاريخ الإصدار : 23 الخميس , شوال, 1389

الکلمات المفتاحية: شبیه سازی تونل باد, بهینه سازی آئرودینامیک, شکل ساختمانهای بلند, ضریب پسا, نیروی باد,

ملخص المقالة :

رفتارشناسی باد در اطراف ساختمان‌های بلند به‌عنوان یکی از مباحث بسیار مهم در طراحی معماری و طراحی سازه شناخته می‌شود. هدف از انجام این پژوهش، بررسی تکنیک‌های آئرودینامیکی و بهینه‌سازی فرم در ساختمان‌های بلند برای کاهش نیروی پسا بود.برای شبیه‌سازی دینامیک سیالات محاسباتی و تونل باد از نرم‌افزار Autodesk Flow Design 2014 بهره‌گیری شد. این شبیه سازی بر روی 29 مدل ساختمانی که با تکنیک‌های آئرودینامیکی طراحی شده بودند انجام شد. تکنیک‌های آئرودینامیکی به دو صورت اصلاحات آئرودینامیکی شامل پخ زدن، نرم کردن و دندانه‌دار کردن و همین‌طور فرم‌های آئرودینامیکی نیز شامل مخروطی، عقب‌نشینی و پیچشی بودند که بر روی اشکال با سطح مقطع مربع، مثلث و دایره مدل‌سازی شدند. یافته‌ها نشان داد برای طراحی ساختمان‌های حدود 150 متر، شکل پایه مثلث با اصلاح آئرودینامیکی پخ خورده و با فرم آئرودینامیکی مخروطی می‌تواند دارای کمترین میزان ضریب پسا و همین‌طور بهترین رفتار آئرودینامیکی را در برابر نیروی باد داشته باشد.

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