Lattice Boltzmann simulation of natural convection in an open enclosure subjugated to water/copper nanofluid

被引：92

作者：

Kefayati, G. H. R. ^{[1
]}

Hosseinizadeh, S. F. ^{[1
]}

Gorji, M. ^{[1
]}

Sajjadi, H. ^{[1
]}

机构：

[1] Babol Univ Technol, Dept Mech Engn, Babol Sar, Mazandaran, Iran

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2012年 / 52卷

关键词：

Natural convection; Open enclosure; Lattice Boltzmann method; Nanofluid; Average Nusselt number; HEAT-TRANSFER CHARACTERISTICS;

D O I：

10.1016/j.ijthermalsci.2011.09.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper Lattice Boltzmann simulation of natural convection in an open enclosure which subjugated to water/copper nanofluid has been investigated. Calculations were performed for Rayleigh numbers (Ra = 10(4)-10(6)), volume fractions of nanoparticles (0 <= phi <= 0.05) and open enclosure aspect ratios (0.5 <= A <= 2). The comparisons show that the average Nusselt number increases with augmentation of Rayleigh number and the volume fraction of nanoparticles for whole ranges of aspect ratios. The average Nusselt number decreases as the aspect ratio increases at various Rayleigh numbers and different the nanoparticle volume fractions. But generally the most effect of nanoparticles on heat transfer enhancement is observed at the aspect ratio of A=2. Also nanoparticles influence the heat transfer less at Ra = 10(5) among studied Rayleigh numbers. (C) 2011 Elsevier Masson SAS. All rights reserved.

引用

页码：91 / 101

页数：11

共 22 条

[1] AN INTERFEROMETRIC INVESTIGATION OF OPEN-CAVITY NATURAL-CONVECTION HEAT TRANSFER [J].

Cha, S. S. ;

Choi, K. J. .

EXPERIMENTAL HEAT TRANSFER, 1989, 2 (01) :27-40

[2] A NUMERICAL STUDY OF TWO-DIMENSIONAL NATURAL-CONVECTION IN SQUARE OPEN CAVITIES [J].

CHAN, YL ;

TIEN, CL .

NUMERICAL HEAT TRANSFER, 1985, 8 (01) :65-80

[3] Buoyancy-driven heat transfer of water-based Al2O3 nanofluids in a rectangular cavity [J].

Hwang, Kyo Sik ;

Lee, Ji-Hwan ;

Jang, Seok Pil .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2007, 50 (19-20) :4003-4010

[4] Numerical simulation of free convection based on experimental measured conductivity in a square cavity using Water/SiO2 nanofluid [J].

Jahanshahi, M. ;

Hosseinizadeh, S. F. ;

Alipanah, M. ;

Dehghani, A. ;

Vakilinejad, G. R. .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2010, 37 (06) :687-694

[5] An immersed boundary-thermal lattice Boltzmann method using an equilibrium internal energy density approach for the simulation of flows with heat transfer [J].

Jeong, H. K. ;

Yoon, H. S. ;

Ha, M. Y. ;

Tsutahara, M. .

JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 229 (07) :2526-2543

[6] Lattice Boltzmann simulation of natural convection in tall enclosures using water/SiO2 nanofluid [J].

Kefayati, Gh. R. ;

Hosseinizadeh, S. F. ;

Gorji, M. ;

Sajjadi, H. .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2011, 38 (06) :798-805

[7] Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids [J].

Khanafer, K ;

Vafai, K ;

Lightstone, M .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2003, 46 (19) :3639-3653

[8] Analysis of convective instability and heat transfer characteristics of nanofluids [J].

Kim, J ;

Kang, YT ;

Choi, CK .

PHYSICS OF FLUIDS, 2004, 16 (07) :2395-2401

[9]

Le Quere P., 1981, Numerical Heat Transfer, V4, P249, DOI 10.1080/01495728108961792

[10] Numerical modeling of natural convection in an open cavity with two vertical thin heat sources subjected to a nanofluid [J].

Mahmoudi, Amir Houshang ;

Shahi, Mina ;

Shahedin, Abed Moheb ;

Hemati, Neda .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2011, 38 (01) :110-118

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