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Turbulent Pulsating Nanofluids Flow and Heat Transfer inside Constant Heat Flux Boundary Condition Helical-Coil Tube | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 1، دوره 4، شماره 3، آذر 2020، صفحه 289-300 اصل مقاله (1.52 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.16137.5807 | ||
| نویسندگان | ||
| Ali Akbar Abbasian Arani* 1؛ Amin Jahani2 | ||
| 1Associate Professor Mechanical Engineering Department University of Kashan Kashan Iran | ||
| 2Mechanical Engineering Department University of Kashan Kashan | ||
| چکیده | ||
| Heat transfer enhancement has been the goal of many researches carried out over the past three decades. Employing the modified fluids, changing the flow geometry, and active methods are among the commonly used techniques. The effects of three referred techniques, employing pulsation flow as active method, nanofluids instead of conventional fluid as modified fluids and helical-coil tube as changing the flow geometry on the fluid flow and heat transfer have been investigated numerically. The results of interests with pulsation flow and non-pulsation flow have been presented. In this research, the results indicated that, the coil pitch tube and coil diameter have a minor effect on the Nusselt number (5 and 7%, respectively). But the Reynolds number has a major effect on the Nusselt number, so that by increasing the Reynolds number from 5000 to 100000, the Nusselt number will be enhanced by more than 200%. The nanofluid pressure drop and heat transfer coefficient increased with nanoparticles volume fraction. In addition, by introducing a concept as the performance evaluation criteria, the mutual effects of the pressure drop and Nusselt number were investigated with referred concept. Performance evaluation criteria revealed that employing the nanofluid in lower Reynolds numbers yields higher effects on the fluid flow and heat transfer. | ||
| کلیدواژهها | ||
| Nanofluid؛ Helical-Coil tube؛ Pulsating flow؛ Pressure drop؛ Performance evaluation criteria | ||
| مراجع | ||
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[1] M. Sheikholeslami, H. Sajjadi, A. Amiri Delouei, M. Atashafrooz, Z. Li, Magnetic force and radiation influences on nanofluid transportation through a permeable media considering Al2O3 nanoparticles, Journal of Thermal Analysis and Calorimetry, 136 (6) (2019) 2477-2485.
[2] A.A. Abbasian Arani, J. Amani, M. Hemmat Esfeh, Numerical simulation of mixed convection flows in a square double lid-driven cavity partially heated using nanofluid, Journal of Nanostructures, 2(3) (2012) 301-311.
[3] M. Atashafrooz, M. Sheikholeslami, H. Sajjadi, A. Amiri Delouei, Interaction effects of an inclined magnetic field and nanofluid on forced convection heat transfer and flow irreversibility in a duct with an abrupt contraction, Journal of Magnetism and Magnetic Materials, 478 (2019) 216-226.
[4] A.A. Abbasian Arani, E. Kakoli, N. Hajialigol, Double-diffusive natural convection of Al2O3-water nanofluid in an enclosure with partially active side walls using variable properties, Journal of Mechanical Science and Technology, 28(11) (2014) 4681-4691.
[5] H. Sajjadi, A. Amiri Delouei, M. Atashafrooz, M. Sheikholeslami, Double MRT Lattice Boltzmann simulation of 3-D MHD natural convection in a cubic cavity with sinusoidal temperature distribution utilizing nanofluid, International Journal of Heat and Mass Transfer, 126 (A) (2018) 489-503.
[6] M. Hemmat Esfe, A.A. Abbasian Arani, M.R. Madadi, A. Alirezaie, A study on rheological characteristics of hybrid nano-lubricants containing MWCNT-TiO2 nanoparticles, Journal of Molecular Liquid, 260 (2018) 229-236.
[7] M. Atashafrooz, Effects of Ag-water nanofluid on hydrodynamics and thermal behaviors of three-dimensional separated step flow, Alexandria Engineering Journal, 57(4) (2018) 4277-4285.
[8] M. Hemmat Esfe, A.A. Abbasian Arani, A. Aghaie, S. Wongwises, Mixed convection flow and heat transfer in an up-driven, inclined, square enclosure subjected to DWCNT-water nanofluid containing three circular heat sources, Current Nanoscience, 13(3) 311-323.
[9] M. Dastmalchi, G.A. Sheikhzadeh, A.A. Abbasian Arani, Double-diffusive natural convective in a porous square enclosure filled with nanofluid, International Journal of Thermal Sciences, 95 (2015) 88-98.
[10] M. Hemmat Esfe, H. Rostamian, A. Shabani-samghabadi, A.A. Abbasian Arani, Application of three-level general factorial design approach for thermal conductivity of MgO/water nanofluids, Applied Thermal Engineering, 127 (2017) 1194-1199.
[11] A.A. Abbasian Arani, H. Aberoumand, S. Aberoumand, A.J. Moghaddam, M. Dastanian, An empirical investigation on thermal characteristics and pressure drop of Ag-oil nanofluid in concentric annular tube, Heat and Mass Transfer, 52 (8) (2016) 1693-1706.
[12] A.A. Abbasian Arani, S. Sadripour, S. Kermani, Nanoparticle shape effects on thermal-hydraulic performance of boehmite alumina nanofluids in a sinusoidal–wavy mini-channel with phase shift and variable wavelength, International Journal of Mechanical Sciences, 128-129 (2017) 550-563.
[13] H. Ramezani Kharvani, F. Ilami Doshmanziari, A. Zohir, D. Jalali‑Vahid, An experimental investigation of heat transfers in a spiral‑coil tube with pulsating turbulent water flow, Heat Mass Transfer, 52(9) (2015) 1179-1789.
[14] Z. Jun, Z. Danling, W. Ping, G. Hong, An Experimental Study of Heat Transfer Enhancement with a Pulsating Flow, Heat Transfer—Asian Research, 33 (5) (2004) 271-278.
[15] F. Doshmanziari, A. Zohir, H. Ramezani Kharvani, D. Jalali‑Vahid, M. Kadivar M, Characteristics of heat transfer and flow of Al2O3/water nanofluid in a spiral‑coil tube for turbulent pulsating flow, Heat and Mass Transfer, 52 (7) (2015) 1305-1320.
[16] A. Zohir, A. Abdel Aziz, M. Habib, Heat Transfer Characteristics and Pressure Drop of the Concentric Tube Equipped with Coiled Wires for Pulsating Turbulent flow, Experimental Thermal and Fluid Sciences, 65 (2015) 41-51.
[17] H. Hassanzadeh Afrouzi, A. Rabienataj Darzi, M. Delavar, A. Abouei Mehrizi, Pulsating Flow and Heat Transfer in a Helical Tube with Constant Heat Flux, International Journal of Advance Industrial Engineering, 1(2) (2013) 36-39. [18] P. Patro, R. Gupta, A. Khuntia, Numerical Study for the prediction of heat transfer in a pulsating turbulent flow in a pipe, Procedia Engineering, 127 (2015) 854 – 861. [19] P. Naphon, S. Wiriyasart, Pulsating TiO2/water nanofluids flow and heat transfer in the spirally coiled tubes with different magnetic field directions, International Journal of Heat and Mass Transfer, 115 (2017) 537–543. [20] S. Sivasankaran, K. Narrein, Numerical investigation of two-phase laminar pulsating nanofluid flow in helical microchannel filled with a porous medium, International Communications in Heat and Mass Transfer, 75 (2016) 86-91. [21] M. Rahgoshay, A. Ranjbar, A. Ramiar, Laminar pulsating flow of nanofluids in a circular tube with isothermal wall, International Communications in Heat and Mass Transfer, 39 (2012) 463–469. [22] Y. Ishino, M. Suzuki, N. Ohiwa, Flow and heat transfer characteristics in pulsating pipe flow (effects of pulsation on internal heat transfer in a circular pipe flow), Heat Transfer Japanese Resarch, 25(5) (1996) 323–341. [23] E. Elshafei, M. Safwat Mohamed, H. Mansour, M. Sakr, NUMERICAL STUDY OF HEAT TRANSFER IN PULSATING TURBULENT AIR FLOW, Thermal Issues in Emerging Technologies, ThETA 1, Cairo, (2007) 63-70. [24] M. Jarrahi, C. Castelain, Secondary flow patterns and mixing in laminar pulsating flow through a curved pipe, Experiments in Fluids, 50 (2010) 1539–1558. [25] F. Selimefendigil, H.F. Öztop, Effects of phase shift on the heat transfer characteristics in pulsating mixed convection flow in a multiple vented cavity, Applied Mathematical Modeling, 39 (13) (2015) 3666-3677. [26] X. Wang, N. Zhang, Numerical analysis of heat transfers in pulsating turbulent flow in a pipe, International Journal of Heat and Mass Transfer, 48 (19–20) (2005) 3957-3970. [27] ANSYS CFX–solver theory guide, Release 15, in, ANSYS Inc., 2013. [28] Ö Ağra, H. Demir, Ş.Ö Atayılmaz, F. Kantaş, A.S. Dalkılıç, Numerical investigation of heat transfer and pressure drop in enhanced tubes, International Communications in Heat and Mass Transfer, 38(10) (2011) 1384-1391. [29] E. Elshafei, M.S. Mohamed, H. Mansour, M. Sakr, Experimental study of heat transfer in pulsating turbulent flow in a pipe, International Journal of Heat and Fluid Flow, 29(4) (2008) 1029-1038. [30] M. Khairul, R. Saidur, M. Rahman, M. Alim, A. Hossain, Z. Abdin, Heat transfer and thermodynamic analyses of a helically coiled heat exchanger using different types of nanofluids, International Journal of Heat and Mass Transfer, 67 (2013) 398-403. [31] X.Wang, N. Zhang, Numerical analysis of heat transfer in pulsating turbulent flow in a pipe, International Journal of Heat and Mass Transfer, 48(19-20) (2005) 3957-3970. [32] M.A. Habib, A.M. Attya, S.A.M Said, A.L. Eid, A.Z. Aly, A.Z., Heat transfer characteristics and Nusselt number correlation of turbulent pulsating air flows, Journal of Heat and Mass Transfer 40 (2004) 307–318. [33] N. Jamshidi, M. Farhadi, D.D. Ganji, K. Sedighi, Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers, Applied Thermal Engineering, 51(1-2) (2013) 644-652. [34] M. Fakoor Pakdaman, M.A. Akhavan-Behabadi, P. Razi, An experimental investigation on thermo-physical properties and overall performance of MWCNT/heat transfer oil nanofluid flow inside vertical helically coiled tubes, Experimental Thermal and Fluid Sciences, 40 (2012) 103-111. [35] M. Corcione, Empirical correlating equations for predicting the effective thermal conductivity and dynamic viscosity of nanofluids, Energy Conversion and Management, 52(1) (2011) 789-793. [36] C. Ho, W. Liu, Y. Chang, C. Lin, Natural convection heat transfer of alumina-water nanofluid in vertical square enclosures: an experimental study, International Journal of Thermal Sciences, 49(8) (2010) 1345-1353. [37] A. Bejan, Convection heat transfer, 2nd Edition, Wiley, New York, 1995. | ||
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