Numerical Study of Heat Transfer and Pressure Drop in Forced-convection Nanofluid flow through an internally ribbed pipe

Document Type : Research Paper

Authors

Abstract

Heat transfer and pressure drop in Al2O3-water nanofluid flow through an internally ribbed pipe is studied numerically. The governing conservation equations in cylindrical coordinates for laminar incompressible flow are solved using well-known SIMPLE algorithm based on finite-volume method. The effects of flow parameters, the distance between the pipe ribs, and the volume fraction of nanoparticles, on heat transfer and friction coefficient are investigated. The obtained results illustrate that increasing nanoparticles volume fraction makes the thermal entrance length decrease, and consequently, the heat transfer gets increased. It also reveals that 5% of increment in nanoparticles volume fraction may lead to 28-percent rise in local Nusselt number and about 11-percent rise in average Nusselt number. In this case, the friction factor will also increase about 1.5 times in comparison with the pure fluid ones. The results also show that increasing the pipe ribs distance by five times in Re=100, will make the average Nusselt number increase by 2.45 times.

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[1] Freidoonimehr, N., Rashidi, M.M. (2016) “Dual Solutions for MHD Jeffery–Hamel Nano-fluid Flow in Non-parallel Walls using Predictor Homotopy Analysis Method”. Applied Fluid Mechanics, Vol. 9 (1).
[2] Rashidi, M.M., Vishnu Ganesh, N., Abdul Hakeem, A.K., Ganga, B. (2014) “Buoyancy effect on MHD flow of nanofluid over a stretching sheet in the presence of thermal radiation”. Molecular Liquids, Vol. 198, pp. 234-238.
[3] Anwar Bég, O., Rashidi, M.M., Akbari, M., Hosseini, A. (2014) “Comparative Numerical Study of Single-Phase and Two-Phase Models for Bio-Nanofluid Transport Phenomena”. Mechanics in Medicine and Biology, Vol. 14 (1).
[4] Garoosi, F., Jahanshaloo, L., Rashidi, M.M., Badakhsh, A., Ali, M.E. (2015) “Numerical simulation of natural convection of the nanofluid in heat exchangers using a Buongiorno model”. Applied Mathematics and Computation, Vol. 254, pp. 183-203.
[5] He, Y., Mena, Y., Zhao, Y., Lu, H. Ding, Y. (2009) “Numerical investigation into the convective heat transfer of TiO2 nanofluids flowing through a straight tube under the laminar flow conditions”, Applied Thermal Engineering 29, pp. 1965–1972.
[6] Zeinali-Heris, S., Nasr-Esfahany, M., Etemad, S. Gh. (2007) “Experimental investigation of convective heat transfer of Al2O3/water nanofluid in circular tube”, International Journal of Heat and Fluid Flow 28, pp. 203–210.
[7] Be´cayeMaıga, S.E., Palm, S.J., Nguyen, C.T., Roy, G., Galanis, N. (2005) “Heat transfer enhancement by using nanofluids in forced convection flows”, International Journal of Heat and Fluid Flow 26, pp. 530–546.
[8] Demir, H., Dalkilic, A.S., Kürekci, N.A., Duangthongsuk, W., Wongwises, S. (2011) “Numerical investigation on the single phase forced convection heat transfer characteristics of TiO2 nanofluids in a double-tube counter flow heat exchanger”, International Communications in Heat and Mass Transfer 38, pp. 218–228.
[9] Keshavarz-Moraveji, M., Razvarz, S. (2012) “Experimental investigation of aluminum oxide nanofluid on heat pipe thermal performance”, International Communications in Heat and Mass Transfer 39, pp. 1444–1448.
[10] Gherasim, I., Roy, G., Nguyen, C.T., Von-Goc, D. (2009) “Experimental investigation of nanofluids in confined laminar radial flows”, International Journal of Thermal Sciences 48, pp. 1486–1493.
[11] Choi, J., Zhang, Y. (2012) “Numerical simulation of laminar forced convection heat transfer of Al2O3-water nanofluid in a pipe with return bend”, International Journal of Thermal Sciences 55, pp. 90-102.
[12] Ahmed, M.A., Shuaib, N.H., Yusoff, M.Z. (2012) “Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid”, International Journal of Heat and Mass Transfer 55, pp. 5891–5898.
[13] Manca, O., Nardini, S., Ricci, D. (2012) “A numerical study of nanofluid forced convection in ribbed channels”, Applied Thermal Engineering 37, pp. 280-292.
[14] Suresh, S., Chandrasekar, M., Chandra Sekhar, S. (2010) “Experimental studies on heat transfer and friction factor characteristics of CuO/water nanofluid under turbulent flow in a helically dimpled tube”, Experimental Thermal and Fluid Science 35, pp. 542–549.
[15] Namburu, P.K., Das, D.K., Tanguturi, K.M., Vajjha, R.S. (2009) “Numerical study of turbulent flow and heat transfer characteristics of nanofluids considering variable properties”, International Journal of Thermal Sciences 48, pp. 290–302.
[16] Sundar, L.S., Sharma, K.V. (2010) “Heat transfer enhancements of low volume concentration Al2O3 nanofluid and with longitudinal strip inserts in a circular tube”, International Journal of Heat and Mass Transfer 53, pp. 4280–4286.
[17] Mohammed, H.A., Al-Shamani, A.N., Sheriff, J.M. (2012) “Thermal and hydraulic characteristics of turbulent nanofluids flow in a rib–groove channel”, International Communications in Heat and Mass Transfer 39, pp. 1584–1594.
[18] Gavtash, B., Hussain, K., Layeghi, M., Sadeghi, S. (2012) “Numerical Simulation of the Effects of Nanofluid on a Heat Pipe Thermal Performance”, World Academy of Science Engineering and Technology 68.
[19] Santra, A.K., Sen, S., Chakraborty, N. (2009) “Study of heat transfer due to laminar flow of copper–water nanofluid through two isothermally heated parallel plates”, International Journal of Thermal Sciences 48, pp. 391–400.
[20] Masoumi, N., Sohrabi, N., Behzadmehr, N. (2009) “New model for calculating the effective viscosity of nanofluids”, Journal of Physics D: Applied Physics 42, pp. 055501–055506.
[21] Chon, C.H., Kihm, K.D., Lee, S.P., Choi, S.U.S. (2005) “Empirical correlation finding the role of temperature and particle size for nanofluid (Al2O3) thermal conductivity enhancement”, Applied Physics Letters 87, pp. 153107–153110.
[22] Abu-Nada, E., Masoud, Z., Hijazi, A. (2008) “Natural convection heat transfer enhancement in horizontal concentric annuli using nanofluids”, International Communications in Heat and Mass Transfer 35 (5), pp. 657–665.
[23] Patankar, S.V. (1980) “Numerical heat transfer and fluid flow”, Hemisphere Publishing, Washington D.C.