Natural Convection and Irreversibility Evaluation in a Cubic Cavity with Partial Opening in Both Top and Bottom Sides

被引：16

作者：

Oztop, Hakan F. ^{[1
]}

Almeshaal, Mohammed A. ^{[2
]}

Kolsi, Lioua ^{[3
,4
]}

Rashidi, Mohammed Mehdi ^{[5
,6
]}

Ali, Mohamed E. ^{[7
]}

机构：

[1] Firat Univ, Dept Mech Engn, Fac Technol, TR-23119 Elazig, Turkey

[2] Al Imam Mohammad Ibn Saud Islamic Univ, Dept Mech Engn, Coll Engn, Riyadh 11432, Saudi Arabia

[3] Hail Univ, Dept Mech Engn, Coll Engn, Hail 2240, Saudi Arabia

[4] Univ Monastir, Ecole Natl Ingenieurs, Lab Metrol & Syst Energet, Monastir 5000, Tunisia

[5] Tongji Univ, Shanghai Key Lab Vehicle Aerodynam & Vehicle Ther, Shanghai 200072, Peoples R China

[6] Tongji Univ, ENN Tongji Clean Energy Inst Adv Studies, Shanghai 200072, Peoples R China

[7] King Saud Univ, Dept Mech Engn, Coll Engn, Riyadh 11421, Saudi Arabia

来源：

ENTROPY | 2019年 / 21卷 / 02期

关键词：

open cavity; natural convection; entropy; 3D flow; SURFACE THERMAL-RADIATION; OPEN POROUS CAVITY; ENTROPY GENERATION; HEAT-TRANSFER; NANOFLUID; FLOW; VISUALIZATION; SIMULATION;

D O I：

10.3390/e21020116

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A numerical study on natural convection in a cubical cavity with partial top and bottom openings is performed in this paper. One of the vertical walls of the cavity has higher temperature than that of the opposite one; the remaining walls are insulated perfectly. Three-dimensional simulations of governing equations have been performed using a finite volume technique. The results are presented for different parameters such as opening length and Rayleigh number. It is observed that heat transfer rate and fluid flow can be controlled via opening ratio size and Rayleigh number.

引用

页数：15

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