Heat transfer enhancement by using nanofluids in forced convection flows

被引:877
作者
Maïga, SE
Palm, SJ
Nguyen, CT [1 ]
Roy, G
Galanis, N
机构
[1] Univ Moncton, Fac Engn, Moncton, NB E1A 3E9, Canada
[2] Univ Sherbrooke, Dept Mech Engn, Fac Engn, Sherbrooke, PQ J1K 2R1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
laminar forced convection; heat transfer enhancement; heat transfer augmentation; nanofluid; nanoparticles; tube flow; radial flow;
D O I
10.1016/j.ijheatfluidflow.2005.02.004
中图分类号
O414.1 [热力学];
学科分类号
摘要
In the present paper, the problem of laminar forced convection flow of nanofluids has been thoroughly investigated for two particular geometrical configurations, namely a uniformly heated tube and a system of parallel, coaxial and heated disks. Numerical results, as obtained for water-gamma Al2O3 and Ethylene Glycol-gamma Al2O3 mixtures, have clearly shown that the inclusion of nanoparticles into the base fluids has produced a considerable augmentation of the heat transfer coefficient that clearly increases with an increase of the particle concentration. However, the presence of such particles has also induced drastic effects on the wall shear stress that increases appreciably with the particle loading. Among the mixtures studied, the Ethylene Glycol-gamma Al2O3 nanofluid appears to offer a better heat transfer enhancement than water-gamma Al2O3; it is also the one that has induced more pronounced adverse effects on the wall shear stress. For the case of tube flow, results have also shown that, in general, the heat transfer enhancement also increases considerably with an augmentation of the flow Reynolds number. Correlations have been provided for computing the Nusselt number for the nanofluids considered in terms of the Reynolds and the Prandtl numbers and this for both the thermal boundary conditions considered. For the case of radial flow, results have also shown that both the Reynolds number and the distance separating the disks do not seem to considerably affect in one way or another the heat transfer enhancement of the nanofluids (i.e. when compared to the base fluid at the same Reynolds number and distance). (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:530 / 546
页数:17
相关论文
共 48 条
[21]  
LEE S, 1996, ASME PVP, V231, P227
[22]   Heat transfer behaviours of nanofluids in a uniformly heated tube [J].
Maïga, SEB ;
Nguyen, CT ;
Galanis, N ;
Roy, G .
SUPERLATTICES AND MICROSTRUCTURES, 2004, 35 (3-6) :543-557
[23]  
MAIGA SEB, 2004, P CHT 04 ICHMT INT S
[24]  
MAIGA SEB, 2004, THESIS U MONCTON MON
[25]  
Masuda H., 1993, NETSU BUSSEI, V4, P227, DOI [10.2963/jjtp.7.227, DOI 10.2963/JJTP.7.227]
[26]  
Maxwell J.C., 1904, TREATISE ELECT MAGNE, P435
[27]  
MCGINN JH, 1956, APPL SCI RES, V5, P255
[28]   HEAT-TRANSFER IN PARTICULATE FLOWS [J].
MICHAELIDES, EE .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1986, 29 (02) :265-273
[29]  
MOCHIZUKI S, 1986, J THERMOPHYS, V1, P112
[30]   LOCAL ENHANCEMENT OF HEAT-TRANSFER IN A PARTICULATE CROSS-FLOW .1. HEAT-TRANSFER MECHANISMS [J].
MURRAY, DB .
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1994, 20 (03) :493-504