کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4991419 | 1457113 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental research on convective heat transfer of supercritical hydrocarbon fuel flowing through U-turn tubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Convective heat transfer characteristics of hydrocarbon fuel RP-3 flowing through U-turn tubes at supercritical pressures were experimentally investigated. The inner diameter of U-turn tubes is 1.82Â mm and bending diameters are 20Â mm, 30Â mm and 40Â mm. Inner wall temperature and HTC variations were analyzed under different physical factors including heat flux, system pressure, bending diameter and flow direction. Test results indicate that centrifugal force strengthens the flow mixing at the bending section and HTC is averagely enhanced by 40% to twice compared with straight tube. In addition, HTC values increase with decrease of bend diameter and variation curves of all U-turn tubes are displayed as “Inverted U” type. Finally, Grq/Grth>2 is concluded as one criterion evaluating buoyancy effect for supercritical hydrocarbon fuel flowing in U-turn tubes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 116, April 2017, Pages 43-55
Journal: Applied Thermal Engineering - Volume 116, April 2017, Pages 43-55
نویسندگان
Yanchen Fu, Jie Wen, Zhi Tao, Guoqiang Xu, Haoran Huang,