Radiating extended surfaces are generally used to reinforce heat transfer between a primary surface and its environment. Specifically, if great temperature contrasts are taken into account, variable thermal conductivity materially affects the performance of the system. Thus the present numerical study is concerned with the thermal performance of a straight porous fi n under the influence of temperature-dependent thermal conductivity, magnetic field, and radiation. The heat transfer model, which includes the Darcy law for simulating flow with solid–fluid interactions in a porous medium, the Rosseland approximation for heat transfer through radiation, the Maxwell equations for the magnetic field effect, and linearly varying temperature-dependent thermal conductivity, results in a highly nonlinear ordinary differential equation solved with using the finite-difference scheme with suitable boundary conditions. The obtained solutions are interpreted physically by considering the impact of relevant nondimensional parameters on the thermal performance, efficiency, and effectiveness of the system. It follows from the analysis that the temperature-dependent thermal conductivity improves these characteristics.
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References
D. Snider and A. Kraus, The quest for the optimum longitudinal fin profile, ASME Heat Transf. Div., 64, 43–48 (1986).
A. R. Shouman, An exact general solution for the temperature distribution and radiation heat transfer along constant cross-sectional area fi n, Quart. Appl. Math., 25, 458–462 (1968).
P. Singh, L. Harvender, and B. S. Ubhi, Design and analysis for heat transfer through fi n with extensions, Int. J. Innov. Res. Sci. Eng. Technol., 3, 12054–12061 (2014).
P. Moorthy, A. N. Oumer, and M. Ishak, Experimental investigation on effect of fin shape on the thermal-hydraulic performance of compact fin-and-tube heat exchangers, IOP Conf. Ser.: Mater. Sci. Eng., 318, 1–9 (2018).
B. N. Niroop Kumar and Ramatulasi, Calculating heat transfer rate of cylinder fins body by varying geometry and material, Int. J. Mech. Eng. Robot. Res., 3, 642–657 (2014).
P. Mathiazhagan and S. Jayabharathy, Heat transfer and temperature distribution of different fin geometry using numerical method, JP J. Heat Mass Transf., 6, 223–234 (2012).
R. S. R. Gorla and A. Y. Bakier, Thermal analysis of natural convection and radiation in porous fins, Int. Commun. Heat Mass Transf., 38, 638–645 (2011).
S. Saedodin and M. Shahbabaei, Thermal analysis of natural convection in porous fins with homotopy perturbation method (HPM), Arab. J. Sci. Eng., 38, 2227–2231 (2013).
S. Kiwan, Effect of radiative losses on the heat transfer from porous fin, Int. J. Therm. Sci., 46, 1046–1055 (2007).
M. T. Darvishi, R. S. R. Gorla, F. Khani, and B. J. Gireesha, Thermal analysis of natural convection and radiation in a fully wet porous fin, Int. J. Numer. Methods Heat Fluid Flow, 26, 2419–2431 (2016).
A. Taklifi, C. Aghanajafi, and H. Akrami, The effect of MHD on a porous fin attached to vertical isothermal surface, Transp. Porous Media, 85, 215–231 (2010).
H. A. Hoshyar, D. D. Ganji, and A. R. Majidian, Least square method for porous fin in presence of uniform magnetic field, J. Appl. Fluid Mech., 9, 661–668 (2016).
G. Sevilgen, A numerical analysis of a convective straight fin with temperature dependent thermal conductivity, Therm. Sci., 21, 939–952 (2017).
S. Singh, D. Kumar, and K. N. Rai, Convective-radiative fin with temperature dependent thermal conductivity, heat transfer coefficient and wavelength dependent surface emissivity, Propuls. Power Res., 3, 207–221 (2014).
K. Bamdad, A. Azimi, and H. Ahmadikia, Thermal performance analysis of arbitrary-profile fins with non-Fourier heat conduction, J. Eng. Math., 76, 181–193 (2012).
A. Moradi and H. Ahmadikia, Analytical solution for different profiles of fin with temperature-dependent thermal conductivity, Math. Probl. Eng., 2010, 1–15 (2010).
S. E. Ghasemi, M. Hatami, and D. D. Ganji, Thermal analysis of convective fin with temperature-dependent thermal conductivity and heat generation, Case Stud. Therm. Eng., 4, 1–8 (2014).
A. Moradi, T. Hayat, and A. Alsaedi, Convection–radiation thermal analysis of triangular porous fins with temperature dependent thermal conductivity by DTM, Energy Convers. Manage., 77, 70–77 (2014).
G. Oguntala, R. Abd-Alhameed, and G. Sobamowo, On the effect of magnetic field on thermal performance of convective-radiative fin with temperature dependent thermal conductivity, Karbala Int. J. Mod. Sci., 4, 1–11 (2017).
M. F. Modest, Radiative Heat Transfer, 2nd ed., Academic Press (2003).
M. G. Sobamowo and A. O. Adesina, Thermal performance analysis of convective-radiative fin with temperature dependent thermal conductivity in the presence of uniform magnetic field using partial Noether method, J. Therm. Eng., 4, 2287–2300 (2018).
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Published in Inzhenerno-Fizicheskii Zhurnal, Vol. 95, No. 2, pp. 335–349, March–April, 2022.
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Babitha, Madhurab, K.R. Analysis of Thermal Performance, Efficiency, and Effectiveness of a Straight Porous Fin with Variable Thermal Conductivity. J Eng Phys Thermophy 95, 392–401 (2022). https://doi.org/10.1007/s10891-022-02493-z
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DOI: https://doi.org/10.1007/s10891-022-02493-z