تحلیل عددی و آماری نانوسیال بوهمیت-آلومینا در یک چاه گرمایی استوانه ای با مینی کانال های مارپیچ به روش تاگوچی

نوع مقاله : مقاله پژوهشی

نویسنده

استادیار، گروه مهندسی مکانیک، واحد ماهشهر، دانشگاه آزاد اسلامی، ماهشهر، ایران

چکیده

در این تحقیق، کارایی گرمایی-هیدرولیکی نانوسیال بوهمیت- آلومینا بر پایه آب در یک چاه گرمایی استوانه­ای با مینی­کانال­های مارپیچ به صورت عددی بررسی شده است. فاکتورهای طراحی در چهار سطح شامل زاویه مارپیچ مینی­کانال­ها، عدد رینولدز، شکل نانوذرات و کسر حجمی نانوذرات انتخاب شدند. برای انجام تحلیل حساسیت فاکتورهای طراحی، از روش تاگوچی با آرایه متعامد L16 و تحلیل آماری واریانس استفاده شده است. عدد ناسلت، ضریب اصطکاک فانینگ و ضریب کارایی گرمایی کل به عنوان پارامترهای خروجی محاسبه شد. نتایج به‌دست‌آمده نشان داد که زاویه مارپیچ مینی­کانال‌ها و شکل نانوذرات نقش حیاتی در عدد ناسلت و ضریب اصطکاک فانینگ با مجموع نسبت‌های مشارکت دو فاکتور به ترتیب %21/85 و %96 دارد. همچنین، زاویه مارپیچ مینی کانال ها 93%/47 در ضریب عملکرد حرارتی کل سهم دارد. ترکیب بهینه برای عدد ناسلت و ضریب کارایی گرمایی کل برابر A1B4C4D4 به دست می­آید. به طور کلی، مینی­کانال مارپیچ با نانوسیال بوهمیت -آلومینا می­تواند به عنوان خنک کننده ترجیحی برای منابع گرمایی استوانه­ای مفید باشد.

کلیدواژه‌ها

موضوعات


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