نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده مهندسی معماری و شهرسازی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران.

2 دانشجوی کارشناسی ارشد، گروه معماری، دانشگاه آزاد اسلامی واحد شوشتر، شوشتر، ایران.

3 دانشجوی کارشناسی، دانشکده مهندسی معماری و شهرسازی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران.

10.22061/jsaud.2024.10110.2179

چکیده

مقدمه: هدف اصلی این پژوهش، بهبود فرایند تهویه طبیعی در کلاس ­های درس بود به نحوی که جریان هوای یک­نواخت و مطلوبی (طبق استاندارد اشری) چنان در کلاس برقرار شود که علاوه بر تأمین آسایش ساکنین، مزاحمت ایجاد ننماید.
روش تحقیق: پژوهش حاضر، تحقیقی کاربردی و میان ­رشته­ای است و روشی ترکیبی و ابداعی یافته است: ابتدا با راهبردهای تجربی و از انجام آزمون­ های دوره­ای، پس از شناسایی متغیرهای مستقل (بازشوها و تیغه ­های سایه­انداز خارجی)، متغیر وابسته (سرعت و جهت جریان هوای داخل) توسط دستگاه سرعت ­سنج و انجام آزمایش دود اندازه‌گیری، ثبت سپس داده‌ها به روش شبیه‌سازی، تحلیل شدند.
نتایج و بحث: در این پژوهش، کلیه شبیه‌سازی­ها به روش دینامیک سیال محاسباتی (CFD) و با استفاده از نرم ­افزارهای Gambit و Fluent انجام شد. روایی و پایایی تحقیق از طریق تطابق آزمون­های تجربی با شبیه­ سازی وضع موجود به اثبات رسید و سپس، تجزیه ­وتحلیل داده‌ها انجام شد. نتایج نشان داد که استفاده صحیح از تیغه ­های سایه­ انداز خارجی و نیز کنترل بازشوها می­ تواند تهویه طبیعی مناسبی را در اختیار کاربر قرار دهد.
نتیجه­ گیری: ترکیبی از تیغه­ های سایه ­انداز T شکل و ستون­ های گرد در نما و پنجره ­های خارجی مناسب (مطابق نتایج این مقاله)، ضمن یکنواخت سازی جریان باد خارج، تهویه طبیعی مؤثری را در اکثر ساعات روز در کلاس مهیا می­ نماید. 
 

چکیده تصویری

بهبود وضعیت تهویه طبیعی در کلاسهای درس مدارس مسجدسلیمان بر اساس وضعیت بازشوها و تیغه های سایه انداز خارجی با روش CFD

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Improving the quality of natural ventilation in Masjedsoleiman's Schools' classrooms based on the openings' position and the outdoor shading blades with CFD Method

نویسندگان [English]

  • Omid Rahaee 1
  • Sedighe Sadat Salehi 2
  • Amir.H Shirdel 3

1 SRTTU

2 student

3 SRTTU

چکیده [English]

Abstract: the main purpose of this research is to improve the process of natural ventilation in classrooms, so that a steady and favorable airflow is established in the classroom. The current research is an applied and interdisciplinary research and its method is a mixed and innovative method: In the first place, by means of the experimental strategies and periodic tests, after identifying the independent variables (openings and outdoor shading blades), the dependent variable (the speed and direction of the indoor airflow) was measured and recorded by the speedometer and with the help of the smoke testing, then the data were analyzed by simulation method. All simulations of this research accomplished by Computational Fluid Dynamics (CFD) method, using Gambit and Fluent software. After matching the experimental tests with the simulations, the validity and reliability of the research was proved, and then the data analysis was done. The obtained results showed that proper natural ventilation can be provided to the user, by using the outdoor shading blades properly and controlling the openings. The use of T-shaped shading blades and round columns in the facade of the building and appropriate exterior windows, in addition to balancing the outdoor wind flow, provides effective natural ventilation in the classroom during most hours of the day.

کلیدواژه‌ها [English]

  • indoor airflow
  • outdoor shading blades
  • natural ventilation
  • openings
  • CFD method
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