Investigation of Enhancement of Heat Transfer in Natural Convection Utilizing of Nanofluids

This paper analyses the heat transfer performance and fluid flow using different nanofluids in a square enclosure. The energy equation and Navier-Stokes equation are solved numerically using finite volume scheme. The effect of volume fraction concentration on the enhancement of heat transfer has been studied icorporating the Brownian motion; the influence of effective thermal conductivity on the enhancement was also investigated for a range of volume fraction concentration. The velocity profile for different Rayleigh number. Water-Cu, water AL2O3 and water-TiO2 were tested.




References:
[1] Choi, S.U.S. and J.A. Eastman, Enhancing thermal conductivity of fluids
with nanoparticles. 1995. Medium: ED; Size: 8 p.
[2] Xuan, Y. and Q. Li, Heat transfer enhancement of nanofluids. Int J Heat
Fluid Flow, 2000. 21: p. 58 - 64.
[3] Eastman, J.A., et al., Anomalously increased effective thermal
conductivities of ethylene glycol-based nanofluids containing copper
nanoparticles. Applied Physics Letters, 2001. 78(6): p. 718-720.
[4] Keblinski, P., et al., Mechanism of heat flow in suspension of nano-sized
particle (nanofluids). Int J Heat Mass Transf, 2002. 45(4): p. 855 - 863.
[5] Khanafer, K., K. Vafai, and M. Lightstone, Buoyancy-driven heat
transfer enhancement in a two-dimensional enclosure utilizing
nanofluids. Int J Heat Mass Transf, 2003. 46(19): p. 3639 - 3653.
[6] Wen, D. and Y. Ding, Experimental investigation into convective heat
transfer of nanofluids at the entrance region under laminar flow
conditions. International Journal of Heat and Mass Transfer, 2004.
47(24): p. 5181-5188.
[7] Saidur, R., K.Y. Leong, and H.A. Mohammad, A review on applications
and challenges of nanofluids. Renewable and Sustainable Energy
Reviews, 2011. 15(3): p. 1646-1668.
[8] Putra, N., W. Roetzel, and S. Das, Natural convection of nano-fluids.
Heat and Mass Transfer, 2003. 39(8-9): p. 775-784.
[9] Abu-Nada, E., Effects of variable viscosity and thermal conductivity of
Al2O3-water nanofluid on heat transfer enhancement in natural
convection. Int J Heat Fluid Flow, 2009. 30: p. 679 - 690.
[10] Daungthongsuk, W. and S. Wongwises, A critical review of convective
heat transfer of nanofluids. Renewable and Sustainable Energy Reviews,
2007. 11(5): p. 797-817.
[11] Gu, B., et al., Thermal conductivity of nanofluids containing high aspect
ratio fillers. International Journal of Heat and Mass Transfer, 2013.
64(0): p. 108-114.
[12] Koo, J. and C. Kleinstreuer, A new thermal conductivity model for
nanofluids. Journal of Nanoparticle Research, 2004. 6(6): p. 577-588.
[13] Lee, J.-H., et al., A Review of Thermal Conductivity Data, Mechanisms
and Models for Nanofluids. International Journal of Micro-Nano Scale
Transport, 2010. 1(4): p. 269-322.
[14] Lee, S., et al., Measuring thermal conductivity of fluids containing oxide
nanoparticles. Journal of Heat Transfer, 1999. 121: p. 280 - 289.
[15] Murshed, S.M.S., K.C. Leong, and C. Yang, Investigations of thermal
conductivity and viscosity of nanofluids. International Journal of
Thermal Sciences, 2008. 47(5): p. 560-568.
[16] Patel, H.E., et al., Thermal conductivities of naked and monolayer
protected metal nanoparticle based nanofluids: Manifestation of
anomalous enhancement and chemical effects. Applied Physics Letters,
2003. 83(14): p. 2931-2933.
[17] Syam Sundar, L., M.K. Singh, and A.C.M. Sousa, Investigation of
thermal conductivity and viscosity of Fe3O4 nanofluid for heat transfer
applications. International Communications in Heat and Mass Transfer,
2013. 44(0): p. 7-14.
[18] Saleh, H., R. Roslan, and I. Hashim, Natural convection heat transfer in
a nanofluid-filled trapezoidal enclosure. International Journal of Heat
and Mass Transfer, 2011. 54(1–3): p. 194-201.
[19] Nasrin, R., M.A. Alim, and A.J. Chamkha, Buoyancy-driven heat
transfer of water–Al2O3 nanofluid in a closed chamber: Effects of solid
volume fraction, Prandtl number and aspect ratio. International Journal
of Heat and Mass Transfer, 2012. 55(25–26): p. 7355-7365.
[20] Ghasemi, B. and S.M. Aminossadati, Natural Convection Heat Transfer
in an Inclined Enclosure Filled with a Water-Cuo Nanofluid. Numerical
Heat Transfer, Part A: Applications, 2009. 55(8): p. 807-823.
[21] Ho, C.J., et al., Natural convection heat transfer of alumina-water
nanofluid in vertical square enclosures: An experimental study.
International Journal of Thermal Sciences, 2010. 49(8): p. 1345-1353.
[22] Ghasemi, B. and S.M. Aminossadati, Brownian motion of nanoparticles
in a triangular enclosure with natural convection. International Journal
of Thermal Sciences, 2010. 49(6): p. 931-940.
[23] Corcione, M., E. Habib, and A. Quintino, A two-phase numerical study
of buoyancy-driven convection of alumina–water nanofluids in
differentially-heated horizontal annuli. International Journal of Heat and
Mass Transfer, 2013. 65(0): p. 327-338. [24] Corcione, M., Rayleigh-Bénard convection heat transfer in nanoparticle
suspensions. International Journal of Heat and Fluid Flow, 2011. 32(1):
p. 65-77.
[25] Koo, J. and C. Kleinstreuer, Laminar nanofluid flow in microheat-sinks.
International Journal of Heat and Mass Transfer, 2005. 48(13): p. 2652-
2661.