کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7054700 1458022 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental study on laminar pulsating flow and heat transfer of nanofluids in micro-fins tube with magnetic fields
ترجمه فارسی عنوان
مطالعه تجربی بر روی جریان پالسی لامینر و انتقال حرارت نانوفیلدیها در لوله میکرو فین با میدان مغناطیسی
کلمات کلیدی
جریان پویا میدان مغناطیسی، نانوفیلد ها، لوله میکرو لبه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
A combined heat transfer enhancement techniques: pulsating flow, nanofluids, micro-fins tube, and magnetic field on the heat transfer and flow characteristics in the micro-fins tube are investigated. Experiments are performed under conditions of nanofluids Reynolds number varying from 1000 to 2400 and nanofluids concentrations of 0.25%, 0.50% by volume. The inlet nanofluids and uniform wall heat input are 20 °C, and 120-160 W, respectively while the nanofluids frequency pulsating flow through the test section is 10-20 Hz. The results obtained from the micro-fins tube with magnetic field are compared with those without magnetic field and those from the smooth tube with and without magnetic fields. It can be seen that a combined heat transfer enhancement techniques are a good potential to improve the thermal performance of thermal devices. The pulsating flow and magnetic field have an advantage on the Brownian motion of nanoparticles in the base fluid flowing through the system. Results show that the heat transfer enhancement increases significantly with increase in nanoparticle concentration, magnetic field strength, and with the pulsating frequency. However, they are slightly effect on the pressure drop.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 118, March 2018, Pages 297-303
نویسندگان
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