Ghadiri, Matin, haghani, omid, Emam-jomeh, Erfan, Barati, Ebrahim. (1400). Experimental investigation on laminar convective heat transfer of nano ferrofluids under constant and alternating magnetic field. نشریه مهندسی عمران امیرکبیر, 5(3), 477-494. doi: 10.22060/ajme.2020.18628.5908
Matin Ghadiri; omid haghani; Erfan Emam-jomeh; Ebrahim Barati. "Experimental investigation on laminar convective heat transfer of nano ferrofluids under constant and alternating magnetic field". نشریه مهندسی عمران امیرکبیر, 5, 3, 1400, 477-494. doi: 10.22060/ajme.2020.18628.5908
Ghadiri, Matin, haghani, omid, Emam-jomeh, Erfan, Barati, Ebrahim. (1400). 'Experimental investigation on laminar convective heat transfer of nano ferrofluids under constant and alternating magnetic field', نشریه مهندسی عمران امیرکبیر, 5(3), pp. 477-494. doi: 10.22060/ajme.2020.18628.5908
Ghadiri, Matin, haghani, omid, Emam-jomeh, Erfan, Barati, Ebrahim. Experimental investigation on laminar convective heat transfer of nano ferrofluids under constant and alternating magnetic field. نشریه مهندسی عمران امیرکبیر, 1400; 5(3): 477-494. doi: 10.22060/ajme.2020.18628.5908

Experimental investigation on laminar convective heat transfer of nano ferrofluids under constant and alternating magnetic field

AUT Journal of Mechanical Engineering
مقاله 10، دوره 5، شماره 3، پاییز 2021، صفحه 477-494    اصل مقاله (1.17 M)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22060/ajme.2020.18628.5908
نویسندگان
Matin Ghadiri1؛ omid haghani2؛ Erfan Emam-jomeh2؛ Ebrahim Barati* 2
1Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
2Department of Mechanical Engineering, Khayyam University, Mashhad, Iran
چکیده
Due to unique characteristic behavior of ferrofluids, their rheological and thermophysical properties will be able to change in the external magnetic field. In this paper, the effects of constant and alternating magnetic field on the convective heat transfer coefficient of ferrofluids in a heated circular tube under laminar flow regimes (200≤Re≤1600) are investigated experimentally. The fluids considered in the experiment are distilled water and a Fe3O4/water nanofluid with 1% and 3% concentrations by weight (wt%). The obtained results are validated and a good agreement between the experimental data and predicted results is observed. In the absence of a magnetic field, the results illustrate the significant improvement of convective heat transfer for 3 wt% ferrofluid, compared to that of the distilled water as a working fluid. The heat transfer enhancement varies by changing the Reynolds number as well as ferrofluid concentration and the type of applied magnetic field. The results also show that with application of alternating magnetic field with frequency of 50 Hz, the maximum of 5% enhancement in the convective heat transfer coefficient is obtained compared to the case with no magnetic field.
کلیدواژه‌ها
Convective heat transfer؛ Fe3O4/water nanofluid؛ Pipe laminar flow؛ Alternating and constant magnetic field
مراجع
آمار
تعداد مشاهده مقاله: 797
تعداد دریافت فایل اصل مقاله: 932
پیوندهای مفید
آمار
تعداد نشریات9
تعداد شماره‌ها455
تعداد مقالات5,771
تعداد مشاهده مقاله8,375,417
تعداد دریافت فایل اصل مقاله6,933,999