Natural Convection and Entropy Generation in a Square Cavity with Variable Temperature Side Walls Filled with a Nanofluid: Buongiorno's Mathematical Model

被引:44
作者
Sheremet, Mikhail A. [1 ,2 ]
Grosan, Teodor [3 ]
Pop, Ioan [3 ]
机构
[1] Tomsk State Univ, Dept Theoret Mech, Tomsk 634050, Russia
[2] Tomsk Polytech Univ, Dept Nucl & Thermal Power Plants, Tomsk 634050, Russia
[3] Babes Bolyai Univ, Dept Math, Cluj Napoca 400084, Romania
关键词
natural convection; square cavity; sinusoidal wall temperature; nanofluids; Brownian diffusion; thermophoresis; numerical method; NON-NEWTONIAN NANOFLUID; HEAT-TRANSFER; MIXED CONVECTION; POROUS CAVITY; ENCLOSURE; LAMINAR; FLOW; DISTRIBUTIONS; PREDICTION; PART;
D O I
10.3390/e19070337
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Natural convection heat transfer combined with entropy generation in a square cavity filled with a nanofluid under the effect of variable temperature distribution along left vertical wall has been studied numerically. Governing equations formulated in dimensionless non-primitive variables with corresponding boundary conditions taking into account the Brownian diffusion and thermophoresis effects have been solved by finite difference method. Distribution of streamlines, isotherms, local entropy generation as well as Nusselt number has been obtained for different values of key parameters. It has been found that a growth of the amplitude of the temperature distribution along the left wall and an increase of the wave number lead to an increase in the average entropy generation. While an increase in abovementioned parameters for low Rayleigh number illustrates a decrease in average Bejan number.
引用
收藏
页数:16
相关论文
共 50 条
[41]   Entropy generation for compressible natural convection with high gradient temperature in a square cavity [J].
Alipanah, M. ;
Hasannasab, P. ;
Hosseinizadeh, S. F. ;
Darbandi, M. .
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2010, 37 (09) :1388-1395
[42]   Darcian Natural Convection in Inclined Square Cavity Partially Filled Between the Central Square Hole Filled with a Fluid and Inside a Square Porous Cavity Filled with Nanofluid [J].
Alsabery, A. I. ;
Saleh, H. ;
Hashim, I. ;
Hussain, S. H. .
JOURNAL OF APPLIED FLUID MECHANICS, 2016, 9 (04) :1763-1775
[43]   Analysis of entropy generation and natural convection in an inclined partially porous layered cavity filled with a nanofluid [J].
Armaghani, T. ;
Ismael, Muneer A. ;
Chamkha, Ali J. .
CANADIAN JOURNAL OF PHYSICS, 2017, 95 (03) :238-252
[44]   Mixed convection of non-Newtonian nanofluid in an enclosure using Buongiorno's mathematical model [J].
Kefayati, G. H. R. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2017, 108 :1481-1500
[45]   Nanofluid and porous fins effect on natural convection and entropy generation of flow inside a cavity [J].
Siavashi, Majid ;
Yousofvand, Reza ;
Rezanejad, Saeed .
ADVANCED POWDER TECHNOLOGY, 2018, 29 (01) :142-156
[46]   Influence of magnetic field on natural convection and entropy generation in Cu-water nanofluid-filled cavity with wavy surfaces [J].
Cho, Ching-Chang .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2016, 101 :637-647
[47]   Free Convection in a Square Cavity Filled with a Porous Medium Saturated by Nanofluid Using Tiwari and Das' Nanofluid Model [J].
Sheremet, M. A. ;
Grosan, T. ;
Pop, I. .
TRANSPORT IN POROUS MEDIA, 2015, 106 (03) :595-610
[48]   DOUBLE-DIFFUSIVE NATURAL CONVECTION IN A SQUARE POROUS CAVITY WITH SINUSOIDAL DISTRIBUTIONS SIDE WALLS FILLED WITH A NANOFLUID [J].
Aly, Abdelraheem M. ;
Ahmed, Sameh E. ;
Raizah, Z. A. S. .
JOURNAL OF POROUS MEDIA, 2018, 21 (02) :101-122
[49]   Natural convection and entropy generation in a square cavity [J].
Yilbas, BS ;
Shuja, SZ ;
Gbadebo, SA ;
Abu Al-Hamayel, HI ;
Boran, K .
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 1998, 22 (14) :1275-1290
[50]   Heatline visualization of conjugate natural convection in a square cavity filled with nanofluid with sinusoidal temperature variations on both horizontal walls [J].
Alsabery, A. I. ;
Chamkha, A. J. ;
Saleh, H. ;
Hashim, I. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2016, 100 :835-850