29 تیر 1403
امين شهسوارگلدانلو

امین شهسوارگلدانلو

مرتبه علمی: استادیار
نشانی: دانشگاه صنعتی کرمانشاه - دانشکده مهندسی - گروه مهندسی مکانیک
تحصیلات: دکترای تخصصی / مهندسی مکانیک
تلفن:
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان
Numerical investigation of natural convection behavior of molten PCM in an enclosure having rectangular and tree-like branching fins
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Fin Molten PCM Natural convection PV/PCM system Tree-like branching fin Heat transfer degradation
پژوهشگران چاقاتای ییلدز (نفر اول)، مسلم آریجی (نفر دوم)، ساندرو نیزتیچ (نفر سوم)، امین شهسوارگلدانلو (نفر چهارم)

چکیده

In phase-change applications, once the melting process is completed, the natural convective heat transfer of liquid material may be promoted or degraded by the fins, which is the main motivation of this research. For this reason, the natural convection heat transfer inside a PCM container that can be a representative model for PV/PCM systems is numerically investigated in this study by considering three aspect ratios (AR ¼ 1, 2 and 4), three Rayleigh numbers (Ra ¼ 104, 105 and 106), two types of fins as rectangular and tree-like branching fin, and three different length-to-height ratio of rectangular fin (w/ H ¼ 0.3, 0.4 and 0.5). The rates of increment and decrement are presented taking the finless enclosure as the reference case. The computed results revealed that the natural convection is promoted up to 20%, depending on Ra and fin length by the inclusion of fins when the AR ¼ 1, while it is degraded down by 5.5% for AR ¼ 4. Interestingly, at AR ¼ 2, the percentage increase and decrease of mean Nu numbers are slighter compared to other aspect ratios. Besides, it is also noticed in this study that utilizing a tree-like branching fin is not as effective as a rectangular fin with the same mass.