International Scientific Journal


This theoretical study investigated the effect of thermophysical properties on Nusselt number when the magnetic field and thermal radiation are exposed to the ferrofluid flow at the lower stagnation point of a hot sphere surface. The thermo-physical properties are important mechanisms considered in the heat transfer process. Besides, the ferroparticles volume fraction is one of the variables that can enhance the thermophysical properties that are exclusively studied on thermal conductivity and thermal diffusivity of ferrofluid. Therefore, the correlation between the ferroparticles volume fraction and thermophysical properties is measured by the Pearson product-moment correlation coefficient method. The strength of association and the direction of the relationship between these pertinent variables are exhibited in ferrofluid flow composed of magnetite (Fe3O4) and water (H2O). Regression analysis is implemented to predict the effect of the ferroparticles volume fraction on the Nusselt number. The results show a positive correlation between ferroparticles volume fraction and thermal conductivity as well as between ferroparticles volume fraction and thermal diffusivity. Further-more, a simple linear regression model proposed to predict the Nusselt number when increasing the ferroparticles volume fraction resulted in statistically significant and given minuscule residuals value.
PAPER REVISED: 2022-09-29
PAPER ACCEPTED: 2022-10-12
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Special issue 1, PAGES [117 - 123]
  1. Papell, S. S., Low Viscosity Magnetic Fluid Obtained by the Colloidal Suspension of Magnetic Particles, United States Patent 3215572
  2. Goharkhah, M., et al., Dynamic Measurement of Ferrofluid Thermal Conductivity Under an External Magnetic Field, Heat Mass Transf., 55 (2019), 6, pp. 1583-1592
  3. Gui, N. G. J., et al., Ferrofluids for Heat Transfer Enhancement Under an External Magnetic Field, Int. J. Heat Mass Transf., 123 (2018), Aug., pp. 110-121
  4. Haiza, H., et al., Thermal Conductivity of Water Based Magnetite Ferrofluids at Different Temperature for Heat Transfer Applications, Solid State Phenom., 280 (2018), Aug., pp. 36-42
  5. Afrand, M., et al., Experimental Study on Thermal Conductivity of Water-Based Fe3O4 Nanofluid: Development of a New Correlation and Modeled by Artificial Neural Network, Int. Commun. Heat Mass Transf., 75 (2016), July, pp. 262-269
  6. Aghayari, R., et al., Synthesis and Thermo-Physical Properties of Fe3O4 Nanofluid, Journal of Materials Science & Surface Engineering, 2 (2015), 1, pp. 109-113
  7. Sundar, L.S., et al., Investigation of Thermal Conductivity and Viscosity of Fe3O4 Nanofluid for Heat Transfer Applications, Int. Commun. Heat Mass Transf., 44 (2013), May, pp. 7-14
  8. Yasin, S. H. M., et al., Numerical Investigation of Ferrofluid Flow at Lower Stagnation Point over a Solid Sphere Using Keller-Box Method, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 94 (2022), 2, pp. 200-214
  9. Yasin, S. H. M., et al., Numerical Method Approach for Mangnetohydrodynamic Radiative Ferrofluid Flows over a Solid Sphere Surface, Thermal Science, 25 (2021), Special Issue 2, pp. S379-S385
  10. Ilias, M. R., Steady and Unsteady Aligned Magnetohydrodynamics Free Convection Flows of Magnetic and Non Magnetic Nanofluids along a Wedge, Vertical and Inclined Plates, Ph. D. thesis, Universiti Teknologi, Johore, Malaysia, 2018
  11. Sheikholeslami, M., Ganji, D. D., Free Convection of Fe3O4-Water Nanofluid Under the Influence of an External Magnetic Source, J. Mol. Liq., 229 (2017), Mar., pp. 530-540
  12. Cengel, Y. A., Hhajar, A. J., Heat and Mass Transfer: Fundamentals and Applications, McGraw-Hill Higher Education, New York, USA, 2015
  13. Sheikholeslami, M., Ganji, D. D., Ferrohydrodynamic and Magnetohydrodynamic Effects on Ferrofluid Flow and Convective Heat Transfer, Energy, 75 (2014), Oct., pp. 400-410
  14. Sheikholeslami, M., Ganji, D. D., Ferrofluid Convective Heat Transfer Under the Influence of External Magnetic Source, Alexandria Eng. J., 57 (2016), Mar., pp. 49-60
  15. Ilias, M. R., et al., Unsteady Aligned MHD Boundary-layer Flow and Heat Transfer of Magnetic Nanofluid Past a Vertical Flat Plate with Leading Edge Accretion, ARPN J. Eng. Appl. Sci., 13 (2018), 1, pp. 340-351
  16. Ilias, M. R., et al., Aligned MHD of Ferrofluids with Convective Boundary Condition Past an Inclined Plate, Int. J. Eng. Technol., 7 (2018), 3, pp. 337-341
  17. Yasin, S. H. M., et al., MHD Free Convection Boundary-Layer Flow Near the Lower Stagnation Point Flow of a Horizontal Circular Cylinder in Ferrofluid, Proceedings, IOP Conference Series: Materials Science and Engineering, 2020, Kuala Lumpur, Malaysia, Vol. 736, 22117
  18. Tiwari, R. K., Das, M. K., Heat Transfer Augmentation in a Two-Sided Lid-Driven Differentially Heated Square Cavity Utilizing Nanofluids, Int. J. Heat Mass Transf., 50 (2007), 9-10, pp. 2002-2018
  19. Maxwell, J. C., A Treatise On Electricity And Magnetism , Clarendon Press , Oxford, UK, 1873

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence