Effects of uniform rotation and porous layer on free convection in an enclosure having local heat source

被引:33
作者
Mikhailenko, Stepan A. [1 ]
Sheremet, Mikhail A. [1 ]
Mahian, Omid [2 ,3 ]
机构
[1] Tomsk State Univ, Lab Convect Heat & Mass Transfer, Tomsk 634050, Russia
[2] Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian, Shaanxi, Peoples R China
[3] Ferdowsi Univ Mashhad, Ctr Adv Technol, Mashhad, Razavi Khorasan, Iran
基金
俄罗斯科学基金会;
关键词
Convection heat transfer; Uniform rotating cavity; Non-Darcy porous layer; Local heater; Numerical analysis; NATURAL-CONVECTION; ABSORBING FLUID; FLOW; CYLINDER; CHANNEL; CAVITY;
D O I
10.1016/j.ijthermalsci.2019.01.002
中图分类号
O414.1 [热力学];
学科分类号
摘要
Nowadays, the cooling of heat elements is a challenge in electronics and thermal engineering. Such elements are widely used in rotating electronic systems. The present study deals with the effects of uniform rotation and the porous layer (as a control parameter) on free convection in an electronic cabinet having a local heat source. Horizontal walls of the considered cavity are thermally insulated, vertical walls are cooled and an isothermal heater with a constant temperature is in the middle region of the bottom border. Impacts of Rayleigh, Taylor, and Darcy numbers, as well as porous layer thickness on hydro- and thermodynamics have been studied. It has been revealed that a growth of the Taylor number suppresses the mass, momentum and heat transport, while an increase in the porous layer thickness results in the heat transfer rate diminution.
引用
收藏
页码:276 / 284
页数:9
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