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Magneto Hydrodynamic Effect on Nanofluid Flow and Heat Transfer in Backward- Facing Step Using Two-Phase Model | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 5، دوره 4، شماره 1، خرداد 2020، صفحه 51-66 اصل مقاله (2.33 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.14843.5747 | ||
| نویسندگان | ||
| Farrokh Mobadersani* 1؛ Araz Rezavand Hesari2 | ||
| 1Department of Mechanical Engineering, Urmia University of Technology | ||
| 2Mechanical Engineering Department, Universite Laval, Quebec, Canada | ||
| چکیده | ||
| Magneto hydrodynamics effects on nanofluid flow in backward-facing step is studied using two-fluid model of Buongiorno. Due to the utilization of two-phase model, variable nanoparticle concentration and nanofluid properties are considered. Thermophoresis and Brownian diffusivities are calculated in particle dispersion. Effects of Reynolds number, particle volume fraction, magnetic field and Hartmann numbers are studied on heat transfer and fluid flow characteristics. It is shown that introduction of nanoparticles as a second phase, pushes reattachment point further into the downstream, while magnetic field has opposite effect and pushes it backward into the upstream. Particles are shown to be migrating from hot to cold regions due to the dispersion mechanisms considered. In comparison to single phase models, there is 3.7% decrease in maximum Nusselt number and more than 40% difference in the reattachment point location. Accuracy of the reattachment point is shown through previous pure fluid studies, the comparison to which show less than 0.8% tolerance with most recent studies. Relative effect of diffusion mechanisms is compared in different flow conditions, which show up to 12.5% difference. Application of magnetic field results in average Nusselt number increase of more than 10% by Hartmann number of 12. | ||
| کلیدواژهها | ||
| Nanofluid؛ Buongiorno Model؛ Brownian motion؛ Thermophoresis effect؛ Magneto hydrodynamic | ||
| مراجع | ||
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[1] S.U. Choi, J.A. Eastman, Enhancing thermal conductivity of fluids with nanoparticles, Argonne National Lab., IL (United States), 1995.
[2] M. Bahiraei, A comprehensive review on different numerical approaches for simulation in nanofluids: traditional and novel techniques, Journal of Dispersion Science and Technology, 35(7) (2014) 984-996.
[3] W.-S. Han, S.-H. Rhi, Thermal characteristics of grooved heat pipe with hybrid nanofluids, Thermal Science, 15(1) (2011) 195-206.
[4] G. Huminic, A. Huminic, I. Morjan, F. Dumitrache, Experimental study of the thermal performance of thermosyphon heat pipe using iron oxide nanoparticles, International Journal of Heat and Mass Transfer, 54(1-3) (2011) 656-661.
[5] N. Kannadasan, K. Ramanathan, S. Suresh, Comparison of heat transfer and pressure drop in horizontal and vertical helically coiled heat exchanger with CuO/water based nano fluids, Experimental Thermal and Fluid Science, 42 (2012) 64-70.
[6] R. Lotfi, A.M. Rashidi, A. Amrollahi, Experimental study on the heat transfer enhancement of MWNT-water nanofluid in a shell and tube heat exchanger, International Communications in Heat and Mass Transfer, 39(1) (2012) 108-111.
[7] S.S. Murshed, K.C. Leong, C. Yang, N.-T. Nguyen, Convective heat transfer characteristics of aqueous TiO 2 nanofluid under laminar flow conditions, International Journal of Nanoscience, 7(06) (2008) 325-331.
[8] A. Rashad, M.A. Ismael, A.J. Chamkha, M. Mansour, MHD mixed convection of localized heat source/sink in a nanofluid-filled lid-driven square cavity with partial slip, Journal of the Taiwan Institute of Chemical Engineers, 68 (2016) 173-186.
[9] M. Sathiyamoorthy, A.J. Chamkha, Natural convection flow under magnetic field in a square cavity for uniformly (or) linearly heated adjacent walls, International Journal of Numerical Methods for Heat & Fluid Flow, 22(5) (2012) 677-698.
[10] M. Sheikholeslami, T. Hayat, A. Alsaedi, MHD free convection of Al2O3–water nanofluid considering thermal radiation: a numerical study, International Journal of Heat and Mass Transfer, 96 (2016) 513-524.
[11] N. Rudraiah, R. Barron, M. Venkatachalappa, C. Subbaraya, Effect of a magnetic field on free convection in a rectangular enclosure, International Journal of Engineering Science, 33(8) (1995) 1075-1084.
[12] A. Kasaeipoor, B. Ghasemi, S. Aminossadati, Convection of Cu-water nanofluid in a vented T-shaped cavity in the presence of magnetic field, International Journal of Thermal Sciences, 94 (2015) 50-60.
[13] H. Heidary, R. Hosseini, M. Pirmohammadi, M. Kermani, Numerical study of magnetic field effect on nano-fluid forced convection in a channel, Journal of Magnetism and Magnetic Materials, 374 (2015) 11-17.
[14] S. Mojumder, S. Saha, S. Saha, M. Mamun, Effect of magnetic field on natural convection in a C-shaped cavity filled with ferrofluid, Procedia Engineering, 105 (2015) 96-104.
[15] A. Chamkha, M. Ismael, A. Kasaeipoor, T. Armaghani, Entropy generation and natural convection of CuOwater nanofluid in C-shaped cavity under magnetic field, Entropy, 18(2) (2016) 50.
[16] M.A. Ismael, M. Mansour, A.J. Chamkha, A. Rashad, Mixed convection in a nanofluid filled-cavity with partial slip subjected to constant heat flux and inclined magnetic field, Journal of Magnetism and Magnetic Materials, 416 (2016) 25-36.
[17] J.G. Barbosa-Saldaña, N. Anand, Flow over a threedimensional horizontal forward-facing step, Numerical Heat Transfer, Part A: Applications, 53(1) (2007) 1-17.
[18] D. Barkley, M.G.M. Gomes, R.D. Henderson, Threedimensional instability in flow over a backward-facing step, Journal of Fluid Mechanics, 473 (2002) 167-190.
[19] F. Selimefendigil, H.F. Öztop, Numerical analysis of laminar pulsating flow at a backward facing step with an upper wall mounted adiabatic thin fin, Computers & Fluids, 88 (2013) 93-107.
[20] A. Amiri, H.K. Arzani, S. Kazi, B. Chew, A. Badarudin, Backward-facing step heat transfer of the turbulent regime for functionalized graphene nanoplatelets based water–ethylene glycol nanofluids, International Journal of Heat and Mass Transfer, 97 (2016) 538-546.
[21] K.A. Mohammed, A.A. Talib, A. Nuraini, K. Ahmed, Review of forced convection nanofluids through corrugated facing step, Renewable and Sustainable Energy Reviews, 75 (2017) 234-241.
[22] A.S. Kherbeet, H. Mohammed, B. Salman, H.E. Ahmed, O.A. Alawi, Experimental and numerical study of nanofluid flow and heat transfer over microscale backward-facing step, International Journal of Heat and Mass Transfer, 79 (2014) 858-867.
[23] F. Selimefendigil, H.F. Öztop, Laminar convective nanofluid flow over a backward-facing step with an elastic bottom wall, Journal of Thermal Science and Engineering Applications, 10(4) (2018) 041003.
[24] E. Abu-Nada, Application of nanofluids for heat transfer enhancement of separated flows encountered in a backward facing step, International Journal of Heat and Fluid Flow, 29(1) (2008) 242-249.
[25] J. Buongiorno, Convective transport in nanofluids, Journal of heat transfer, 128(3) (2006) 240-250.
[26] Y. Xuan, W. Roetzel, Conceptions for heat transfer correlation of nanofluids, International Journal of heat and Mass transfer, 43(19) (2000) 3701-3707.
[27] D. Wen, Y. Ding, Effect of particle migration on heat transfer in suspensions of nanoparticles flowing through minichannels, Microfluidics and Nanofluidics, 1(2) (2005) 183-189.
[28] Y. Xuan, Q. Li, Heat transfer enhancement of nanofluids, International Journal of heat and fluid flow, 21(1) (2000) 58-64.
[29] M. Bahiraei, S. Mostafa Hosseinalipour, M. Hangi, Prediction of convective heat transfer of Al2O3-water nanofluid considering particle migration using neural network, Engineering Computations, 31(5) (2014) 843- 863.
[30] M. Sheikholeslami, S. Abelman, Two-phase simulation of nanofluid flow and heat transfer in an annulus in the presence of an axial magnetic field, IEEE Transactions on Nanotechnology, 14(3) (2015) 561-569.
[31] M. Sheikholeslami, D.D. Ganji, M.Y. Javed, R. Ellahi, Effect of thermal radiation on magnetohydrodynamics nanofluid flow and heat transfer by means of two phase model, Journal of Magnetism and Magnetic Materials, 374 (2015) 36-43.
[32] G. McNab, A. Meisen, Thermophoresis in liquids, Journal of Colloid and Interface Science, 44(2) (1973) 339-346.
[33] H. Brinkman, The viscosity of concentrated suspensions and solutions, The Journal of Chemical Physics, 20(4) (1952) 571-571.
[34] K. Khanafer, K. Vafai, M. Lightstone, Buoyancydriven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids, International journal of heat and mass transfer, 46(19) (2003) 3639-3653.
[35] S.G. Johnsen, T.M. Pääkkönen, S. Andersson, S.T. Johansen, B. Wittgens, On the wall boundary conditions for species-specific mass conservation equations in mathematical modelling of direct precipitation fouling from supersaturated, multi-component fluid mixtures, arXiv preprint arXiv:1703.01448, (2017).
[36] S. Acharya, G. Dixit, Q. Hou, Laminar mixed convection in a vertical channel with a backstep: a benchmark study, ASME-PUBLICATIONS-HTD, 258 (1993) 11-11.
[37] F. Selimefendigil, H.F. Öztop, Effect of a rotating cylinder in forced convection of ferrofluid over a backward facing step, International Journal of Heat and Mass Transfer, 71 (2014) 142-148.
[38] J.-T. Lin, B.F. Armaly, T. Chen, Mixed convection in buoyancy-assisting, vertical backward-facing step flows, International Journal of Heat and Mass Transfer, 33(10) (1990) 2121-2132.
[39] B.R. Dyne, D.W. Pepper, F.P. Brueckner, Mixed convection in a vertical channel with a backward facing step: A benchmark problem, ASME-PUBLICATIONSHTD, 258 (1993) 49-49.
[40] M. El-Refaee, M. Elsayed, N. Al-Najem, I. Megahid, Steady-state solutions of buoyancy-assisted internal flows using a fast false implicit transient scheme (FITS), International Journal of Numerical Methods for Heat & Fluid Flow, 6(6) (1996) 3-23.
[41] R. Cochran, R. Horstman, Y. Sun, A. Emery, Benchmark Solution for a Vertical, Buoyancy-Assisted Laminar Backward-Facing Step Flow Using Finite Element, Finite Volume and Finite Difference Methods, ASMEPUBLICATIONS- HTD, 258 (1993) 37-37.
[42] M. Bahiraei, S.M. Hosseinalipour, Thermal dispersion model compared with Euler-Lagrange approach in simulation of convective heat transfer for nanoparticle suspensions, Journal of Dispersion Science and Technology, 34(12) (2013) 1778-1789.
[43] E. Esmaeilzadeh, H. Almohammadi, S.N. Vatan, A. Omrani, Experimental investigation of hydrodynamics and heat transfer characteristics of γ-Al2O3/water under laminar flow inside a horizontal tube, International Journal of Thermal Sciences, 63 (2013) 31-37. | ||
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