کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053864 | 1458013 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Natural convection of Al2O3/H2O nanofluid in an open inclined cavity with a heat-generating element
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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
Free convection of alumina-water nanofluid in a tilted open cavity with a heat-generating solid element has been studied. The considered topic allows understanding an opportunity of nanofluids for cooling of the heat-generating elements in open cavities. Upper border is supposed to be open where nanofluid penetrates into the cavity. Simulation has been performed using the Oberbeck-Boussinesq equations formulated in non-dimensional stream function, vorticity and temperature. Finite difference method of the second order accuracy has been applied. The effects of cavity inclination angle (0 â¤Â γ â¤Â Ï/2), heater location (0.1 â¤Â δ â¤Â 0.7, where δ is the dimensionless distance between the heater and left wall) and nanoparticles volume fraction (0 â¤Â Ï â¤Â 0.04) have been analyzed. It has been found that the considered parameters allow minimizing average heater temperature. The cavity inclination angle of Ï/3 characterizes the heat transfer enhancement (average Nusselt number has the maximum value), while the heater average temperature has the minimum value. At the same time, a proximity of the heater to the cavity wall characterizes non-essential cooling of the heat-generating element. The most effective cooling of the heat-generating element occurs for central heater location with cavity inclination angle of Ï/3. The considered alumina-water nanoparticles do not allow to intensify the cooling process for the heater element.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 126, Part B, November 2018, Pages 184-191
Journal: International Journal of Heat and Mass Transfer - Volume 126, Part B, November 2018, Pages 184-191
نویسندگان
Igor V. Miroshnichenko, Mikhail A. Sheremet, Hakan F. Oztop, Nidal Abu-Hamdeh,