مطالعه تولید آنتروپی و ارزیابی خواص آماری انتقال حرارت در جریان مغشوش

علوم کاربردی و محاسباتی در مکانیک

مقاله 5، دوره 29، شماره 1 - شماره پیاپی 17، اسفند 1396، صفحه 63-80   

نوع مقاله: مقاله پژوهشی

شناسه دیجیتال (DOI): 10.22067/fum-mech.v29i1.59586

نویسندگان

فرهاد وحیدی نیا؛ محدثه میری؛ بهروز کشته گر^*

دانشگاه زابل

چکیده

در این مقاله، اثر قطر نانو ذرات در انتقال حرارت جابجایی اجباری جریان مغشوش سیال نانوی آب/ اکسید آلومینیوم درون یک لوله دایره‌ای شکل تحت شار حرارتی یکنواخت در دیواره با استفاده از مدل مخلوط دوفازی بصورت عددی بررسی و تحلیل آماری شده است. کسر حجمی نانوذرات برابر 3 درصد، عدد رینولدز برابر 104×5 و تغییرات قطر نانوذرات در محدوده 20 تا 110 نانومتر فرض شده است. در تحلیل آماری از توابع توزیع احتمال پیوسته نظیر؛ گاما، نرمال، لوگ نرمال، گامبل، وایبول و فسچر استفاده گردیده است. پس از بررسی نتایج مشخص شد که با افزایش قطر ذرات نانو عدد ناسلت کاهش و این پارامتر با توجه به تغییرات قطر نانوذرات از تابع توزیع احتمال فسچر پیروی نموده است.

کلیدواژه‌ها

نانو سیال؛ انتقال حرارت جابه‬جایی؛ قطر ذرات نانو؛ عدد ناسلت؛ تابع توزیع احتمال؛ خواص آماری

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