Effect of Inclination Angle on Three-Dimensional Combined Convective Heat Transfer of Nanofluids in Rectangular Channels

Abstract:

Combined convective nanofluids flow and heat transfer in an inclined rectangular duct is numerically investigated. Three dimensional, laminar Navier-Stokes and energy equations were solved using the finite volume method. Pure water and four types of nanofluids such as Au, CuO, SiO₂ and TiO₂with volume fractions range of 2% φ 7% are used. This investigation covers the following ranges: 2 × 10⁶ Ra 2 × 10⁷, 100 Re 1000 and 30° Θ 60°. The results revealed that the Nusselt number increased as Rayleigh number increased.SiO₂nanofluid has the highest Nusselt number while Au nanofluid has the lowest Nusselt number. An increasing of the duct inclination angle decreases the heat transfer.

• Periodical: Applied Mechanics and Materials (Volume 388)
• Pages: 176-184
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.388.176
• Online since: August 2013
• Authors: Hussein A. Mohammed, Nur Irmawati Om, Mazlan A. Wahid
• Keywords: Combined Convection, Heat Transfer Enhancement, Inclined Rectangular Duct, Nanofluid

References

[1] H.A. Mohammed, G. Bhaskaran, N. H. Shuaib, R. Saidur, Heat transfer and fluid flow characteristics in microchannels heat exchanger using nanofluids: A review, Renew Sust Ener Rev 15 (2011) 1502-1512.

DOI: 10.1016/j.rser.2010.11.031

[2] H.A. Mohammed, A.A. Al-aswadi, N.H. Shuaib, R. Saidur, Convective heat transfer fluid flow study over a step using nanofluids: A review, Renew Sust Ener Rev 15 (2011) 2921.

DOI: 10.1016/j.rser.2011.02.019

[3] W. Daungthougsuk, S. Wongwises, 2007. A critical review of convective heat transfer nanofluids. Renew. Sust. Energy Rev. 11, 797-817.

DOI: 10.1016/j.rser.2005.06.005

[4] S.X. Gao, S. X., J.P. Hartnett, 1992. Non-Newtonian fluid laminar flow and forced convection heat transfer in rectangular ducts. Int. Commu. Heat Mass Transfer 19, 673-686.

DOI: 10.1016/0735-1933(92)90050-r

[5] S. X. Gao, J. P. Hartnett, 1993. Steady flow of non-newtonian fluids through rectangular ducts. Int. Commu. Heat Mass Transfer 20, 197-210.

DOI: 10.1016/0735-1933(93)90048-z

[6] S. Gh. Etemad, A. S. Mujumdar, 1994. The effect of aspect ratio and rounded corners on the laminar forced convection heat transfer of a non-newtonian fluid in the entrance region of a rectangular duct. Int. Commu. Heat Mass Transfer 21 (2), 283-296.

DOI: 10.1016/0735-1933(94)90026-4

[7] W. M. Yan, C. Y. Soong, 1995. Simultaneously developing mixed convection in radially rotating rectangular ducts. Int. J. Heat Mass Transfer 38 (4), 665-677.

DOI: 10.1016/0017-9310(94)00192-x

[8] S. X. Gao, J. P. Hartnett, 1996. Heat transfer behavior of reiver-rivlin fluids in rectangular ducts. Int. J. Heat Mass Transfer 39, 1317-1324.

DOI: 10.1016/0017-9310(95)00041-0

[9] W. M. Yan, 1996. Combined buoyancy effects of thermal and mass diffusion on laminar forced convection in horizontal rectangular ducts. Int. J. Heat Mass Transfer 39 (7), 1479-1488.

DOI: 10.1016/0017-9310(95)00227-8

[10] M. F. Naccache, P. R. Souza Mendes, 1996. Heat transfer to non-newtonian fluids in laminar flow through rectangular ducts. Int. J. Heat Fluid Flow 17, 613-620.

DOI: 10.1016/s0142-727x(96)00062-8

[11] P. Payzar, 1997. Heat transfer enhancement in laminar flow of viscoelastic fluids through rectangular ducts. Int. J. Heat Mass Transfer 40 (3), 745-756.

DOI: 10.1016/0017-9310(96)00091-9

[12] C. H. Sohn, S. T. Ahn, S. Shin, 2000. Heat transfer behavior of temperature-dependent viscoelastic non-newtonian fluid with buoyancy effect in 2: 1 rectangular duct. Int. Commu. Heat Mass Transfer 27 (2), 159-168.

DOI: 10.1016/s0735-1933(00)00097-x

[13] S. G. Etemad, M. Sadeghi, 2001. Non-newtonian pressure drop and critical Reynolds number through rectangular duct. Int. Commu. Heat Mass Transfer 28 (4), 555-563.

DOI: 10.1016/s0735-1933(01)00260-3

[14] H. C. Chiu, J. H. Jang, W. M. Yan, 2007. Mixed convection heat transfer in horizontal rectangular ducts with radiation effects. Int. J. Heat Mass Transfer 50, 2874-2882.

DOI: 10.1016/j.ijheatmasstransfer.2007.01.010

[15] P. Talukdar, C. R. Iskra, C. J. Simonson, 2008. Combined heat and mass transfer for laminar flow of moist air in a 3D rectangular duct: CFD simulation and validation with experimental data. Int. J. Heat Mass Transfer 50, 2874-2882.

DOI: 10.1016/j.ijheatmasstransfer.2007.08.034

[16] M. E. Sayed-Ahmed, K. M. Kishk, 2008. Heat transfer for herschel-bulkey fluids in the entrance region of a rectangular duct. Int. Commu. Heat Mass Transfer 35, 1007-1016.

DOI: 10.1016/j.icheatmasstransfer.2008.05.002

[17] M. Capobianchi, D. Wagner, 2010. Heat transfer in laminar flows of extended modified power law fluids in rectangular ducts. Int. J. Heat Mass Transfer 53, 558-563.

DOI: 10.1016/j.ijheatmasstransfer.2009.08.003

[18] A. Barletta, 2002. Fully developed mixed convection and flow reversal in a vertical rectangular duct with uniform wall heat flux, Int. J. Heat Mass Transfer 45, 641-654.

DOI: 10.1016/s0017-9310(01)00160-0

[19] A. Barletta, E. R. Schio, E. Zanchini, 2003. Combined forced and free flow in a vertical rectangular duct prescribed wall heat flux. Int. J. Heat Fluid Flow 24, 874-887.

DOI: 10.1016/s0142-727x(03)00090-0

[20] M. Greiner, G.J. Spencer, P.F. Fischer, 1998. Direct numerical simulation of three-dimensional flow and augmented heat transfer in a grooved channel. J. Heat Transfer 120, 717-723.

DOI: 10.1115/1.2824341

[21] Y. Asako, M. Faghri, 1988. Three-Dimensional laminar heat transfer and fluid flow characteristics in the entrance region of a rhombic duct. J. Heat Transfer 110, 855-861.

DOI: 10.1115/1.3250585

[22] A.A. Al-Aswadi, H.A. Mohammed, N.H. Shuaib, A. Campo, 2010. Laminar forced convection flow over a backward facing step using nanofluids. Int. Comm. Heat Mass Transfer 37, 950-957.

DOI: 10.1016/j.icheatmasstransfer.2010.06.007

[23] H. A. Mohammed, H. A. Hasan, M. A. Wahid, Heat transfer enhancement of nanofluids in a double pipe heat exchanger with louvered strip inserts, Int Commun Heat Mass Transfer 40 (1) (2013)36-46.

DOI: 10.1016/j.icheatmasstransfer.2012.10.023

[24] M. Corcione, 2010. Heat transfer features of buoyancy-driven nanofluids inside rectangular enclosures differentially heated at the sidewalls. Int. J. Therm. Sci. 49, 1536-1546.

DOI: 10.1016/j.ijthermalsci.2010.05.005

[25] K. Khanafer, K. Vafai, M. Lighstone, 2003. Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids. Int. J. Heat Mass Transfer 46, 3639-3653.

DOI: 10.1016/s0017-9310(03)00156-x

[26] S.V. Patankar, 1980. Numerical Heat Transfer and Fluid Flow, Hemisphere Publishing Corporation, Taylor and Francis Group, New York, (1980).