آنالیز سه‌بعدی جریان جابه‌جایی اجباری در یک کانال دارای پله همراه با در نظر گرفتن اثرات متقابل میدان مغناطیسی و نانو ذرات جامد

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه صنعتی سیرجان

2 دانشکده مهندسی مکانیک، دانشگاه صنعتی سیرجان، سیرجان، ایران

چکیده

در این تحقیق، اثرات متقابل میدان مغناطیسی و نانو ذرات جامد بر جریان جابه‌جایی اجباری سه‌بعدی در یک کانال افقی دارای یک پله پس‌رو شیب‌دار مورد بررسی و مطالعه قرار می­گیرد. سیال کاری در این کانال، نانو سیال آب-اکسید آلومینیوم در نظر گرفته شده است. برای شبیه‌سازی پله پس‌رو شیب‌دار در مختصات کارتزین، از روش ناحیه غیرفعال استفاده می­شود. میدان­های سرعت و دما با حل عددی معادلات ناویر-استوکس و انرژی با استفاده از روش حجم محدود و با به‌کارگیری الگوریتم نمونه به‌دست می­آیند. اثرات عدد هارتمن  و غلظت نانو ذرات اکسید آلومینیوم  بر توزیع میدان­های دما و سرعت در داخل کانال و توزیع­های ضریب اصطکاک و عدد ناسلت روی دیوار پایینی کانال، به‌طور کامل مورد بحث و مطالعه قرار می­گیرند. نتایج این تحقیق به­خوبی نشان می­دهد که رفتارهای هیدرودینامیکی و حرارتی جریان به‌طور قابل توجه­ای وابسته به قدرت میدان مغناطیسی و درصد حجمی نانو ذرات اکسید آلومینیوم است. در حقیقت، بیشترین مقادیر ضریب اصطکاک و نرخ انتقال حرارت روی دیوار پایینی کانال مربوط به حالت  و  است.

کلیدواژه‌ها

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سابقه مقاله

  • تاریخ دریافت: 27 مهر 1399
  • تاریخ بازنگری: 15 آذر 1399
  • تاریخ پذیرش: 04 بهمن 1399
  • تاریخ انتشار: 01 تیر 1399

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