کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7054153 1458015 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulsating flow and magnetic field effects on the convective heat transfer of TiO2-water nanofluids in helically corrugated tube
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Pulsating flow and magnetic field effects on the convective heat transfer of TiO2-water nanofluids in helically corrugated tube
چکیده انگلیسی
Both passive heat transfer enhancement techniques; nanofluids, helically corrugated rib and active heat transfer enhancement techniques; pulsating flow, magnetic field on the convective heat transfer and flow characteristics in the helically corrugated tube are investigated. Experiments set up are designed and constructed to test by varying nanofluids mass flow rate of 0.01-0.10 kg/s, nanofluids concentrations of 0.25%, 0.50% by volume, and nanofluids pulsating flow frequency of 10, 15, 20 Hz and the helically corrugated rib with the depth and pitch of 1.25 mm, 6.35 mm, respectively. As comparing with the plain tube, the physical properties by using nanoparticles and disturbing at the thermal boundary zone of working fluid have significant effect on the enhancement of heat transfer. In addition, the disturbing of nanoparticles Brownian motion suspending in the based fluid by magnetic field and pulsating flow frequency have also significant increment of heat transfer. It can be seen that a combined heat transfer enhancement techniques are satisfy the practical applications to improve the thermal performance of thermal devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 125, October 2018, Pages 1054-1060
نویسندگان
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