کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7060693 | 1458693 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Developed correlations for heat transfer and flow friction characteristics of louvered finned tube heat exchangers
ترجمه فارسی عنوان
همبستگی های توسعه یافته برای انتقال گرما و اصطکاک جریان اصطکاک مبدل حرارتی لوله گالوانیزه
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
3D turbulent flow numerical simulations were performed in order to develop correlations for heat transfer and flow friction characteristics in louvered fin and tube heat exchangers. A detailed sensitivity analysis was done on the effects of Reynolds number, fin pitch, longitudinal tube pitch and transversal tube pitch on parameters j/j0 and f/f0. Developed correlations are based on ratio of Colburn and friction factors of louvered fin heat exchanger to that of flat fin heat exchanger (j/j0 and f/f0) respectively which are much simpler than other correlations. Also, as it is expected, when louver angle approaches zero (flat fin), parameters j/j0 and f/f0 reach 1. This approach cannot be seen in previous developed correlations. The developed correlations can describe 100% and 86% of parameters j/j0 and f/f0 respectively among 186 numerical simulation data within ±15%. Optimum louver angle was also obtained by genetic algorithm using the developed correlations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 129, July 2018, Pages 135-144
Journal: International Journal of Thermal Sciences - Volume 129, July 2018, Pages 135-144
نویسندگان
Ali Sadeghianjahromi, Saeid Kheradmand, Hossain Nemati,