NUMERICAL STUDY ON NATURAL CONVECTION AND ENTROPY GENERATION INSIDE A FLUID SATURATED SQUARE POROUS ENCLOSURE WITH NONUNIFORM HEATING FROM TOP

被引：11
|
作者：
Mullick, Saddam Hossain [1 ]
Dasgupta, Debabrata [2 ]
Kundu, Pranab Kumar [3 ]
机构：
[1] NIT Sikkim, Dept Mech Engn, Ravangla, Sikkim, India
[2] IIT Delhi, Dept Mech Engn, Delhi, India
[3] MNNIT Allahabad, Dept Mech Engn, Allahabad, Uttar Pradesh, India
来源：
JOURNAL OF POROUS MEDIA | 2022年 / 25卷 / 01期
关键词：
natural convection; Rayleigh number; Darcy number; periodic heating; entropy generation; Nusselt number; SINUSOIDAL TEMPERATURE; TRIANGULAR ENCLOSURE; RECTANGULAR ENCLOSURE; CAVITY; FLOW; BOTTOM;
D O I：
10.1615/JPorMedia.2021039355
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Theoretical investigation on buoyancy actuated thermal flow behavior inside fluid-saturated porous enclosure has been performed, where sinusoidal heating is applied from the top surface, which finds significant applications in the glass industries. Results are obtained with the help of stream function, isotherms, Nusselt number, and entropy generation. The key parameters for this study are the Rayleigh number (10(3) <= Ra <= 10(6)), Darcy number (10(-4) <= Da <= 10(-1)), Prandtl number (0.7 <= Pr <= 1000), and phase shift angle (0 degrees <= phi <= 90 degrees). It can be noticed that the flow dynamics drastically alters with Ra, Da, Pr, and phi, and the fluid friction irreversibility is greater in the convection dominating regime.
引用
收藏
页码：83 / 102
页数：20
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