کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656976 1458058 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constructal entransy dissipation rate minimization for triangular heat trees at micro and nanoscales
ترجمه فارسی عنوان
به حداقل رساندن میزان تخلیه ساختاری برای گرما های مثلثی در میکروسکوپ و مقیاس نانو
کلمات کلیدی
تئوری سازه، نرخ بیرون آمدن، درختان گرما مثلثی، میکروسکوپ و مقیاس نانو، بهینه سازی ترمودینامیکی بهینه شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی

The “volume-point” heat conduction model with triangular heat trees is considered in this paper. Several high conductivity channels are distributed in the heat generating body, and the size effects are present in these channels. The minimization of the entransy dissipation rate (EDR) is chosen as the optimization objective. The optimal constructs of the triangular heat trees at different scales are obtained by using the local optimization and global optimization constructal design methods, respectively. The results show that the optimal construct at micro and nanoscales is evidently different from that at convectional scale. The heat conduction performance of the triangular heat trees based on local optimization constructal design method can be further improved compared with that based on the global one. The optimal constructs of the triangular second order assembly (TSOA) with minimum EDR and minimum maximum temperature difference (MTD) are evidently different, and the same conclusion can be obtained for the comparison between the optimization objectives of EDR and entropy generation rate (EGR).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 84, May 2015, Pages 848–855
نویسندگان
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