D. Wen, G. Lin, S. Vafaei, K. Zhang, Review of nanofluids for heat transfer applications, Particuology, 7(2) (2009) 141-150.
 M. Ashouri, B. Ebrahimi, M. Shafii, M. Saidi, M. Saidi, Correlation for Nusselt number in pure magnetic convection ferrofluid flow in a square cavity by a numerical investigation, Journal of Magnetism and Magnetic Materials, 322(22) (2010) 3607-3613.
 R. Azizian, E. Doroodchi, T. McKrell, J. Buongiorno, L. Hu, B. Moghtaderi, Effect of magnetic field on laminar convective heat transfer of magnetite nanofluids, International Journal of Heat and Mass Transfer, 68 (2014) 94-109.
 S.V. Mousavi, M. Sheikholeslami, M.B. Gerdroodbary, The Influence of magnetic field on heat transfer of magnetic nanofluid in a sinusoidal double pipe heat exchanger, Chemical Engineering Research and Design, 113 (2016) 112-124.
 M. Sheikholeslami, S. Shehzad, Numerical analysis of Fe3O4–H2O nanofluid flow in permeable media under the effect of external magnetic source, International Journal of Heat and Mass Transfer, 118 (2018) 182-192.
 Y. Malmir-Chegini, N. Amanifard, Heat transfer enhancement inside semi-insulated horizontal pipe by controlling the secondary flow of oil-based ferro-fluid in the presence of non-uniform magnetic field: A general correlation for the Nusselt number, Applied Thermal Engineering, 159 (2019) 113839.
 R. Kumar, S.P. Mahulikar, Heat transfer characteristics of water flowing through micro-tube heat exchanger with variable fluid properties, Journal of Thermal Analysis and Calorimetry, 140(4) (2020) 1919-1934.
 T. Harms, M. Jog, R. Manglik, Effects of temperature-dependent viscosity variations and boundary conditions on fully developed laminar forced convection in a semicircular duct, Journal of Heat Transfer (Transactions of the ASME), 120 (1998) 600-605.
 J. Liu, X. Peng, B. Wang, Variable-property effect on liquid flow and heat transfer in microchannels, Chemical Engineering Journal, 141(3) (2008) 346-353.
 J.T. Liu, X.F. Peng, W.M. Yan, Numerical study of fluid flow and heat transfer in microchannel cooling passages, International Journal of Heat and Mass Transfer, 50(10) (2007) 1855-1864.
 S. Mahulikar, H. Herwig, Physical effects in laminar microconvection due to variations in incompressible fluid properties, Physics of Fluids, 18(7) (2006) 073601.
 H. Herwig, S.P. Mahulikar, Variable property effects in single-phase incompressible flows through microchannels, International Journal of Thermal Sciences, 45(10) (2006) 977-981.
 S. Mahulikar, H. Herwig, O. Hausner, F. Kock, Laminar gas micro-flow convection characteristics due to steep density gradients, EPL (Europhysics Letters), 68(6) (2004) 811.
 S.P. Mahulikar, H. Herwig, Physical effects in pure continuum-based laminar micro-convection due to variation of gas properties, Journal of Physics D: Applied Physics, 39(18) (2006) 4116.
 R. Kumar, S. Mahulikar, Variable fluid property effect on heat transfer and frictional flow characteristics of water flowing through microchannel, Journal of Engineering Thermophysics, 27(4) (2018) 456-473.
 D.H. Lobón, E. Baglietto, L. Valenzuela, E. Zarza, Modeling direct steam generation in solar collectors with multiphase CFD, Applied Energy, 113 (2014) 1338-1348.
 S. Aberoumand, A. Jafarimoghaddam, M. Moravej, H. Aberoumand, K. Javaherdeh, Experimental study on the rheological behavior of silver-heat transfer oil nanofluid and suggesting two empirical based correlations for thermal conductivity and viscosity of oil based nanofluids, Applied Thermal Engineering, 101 (2016) 362-372.
 R. Shah, A correlation for laminar hydrodynamic entry length solutions for circular and noncircular ducts, Journal of Fluids Engineering (Transactions of the ASME) 100 (1978) 177-179. .
 R.W. Hornbeck, Laminar flow in the entrance region of a pipe, Applied Scientific Research, Section A, 13(1) (1964) 224-232.
 R.K. Shah, A.L. London, Laminar flow forced convection in ducts: a source book for compact heat exchanger analytical data, Academic press, 2014.