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<p>In advanced electronic devices, enhancing heat transfer efficiency often involves utilizing extended surfaces. This paper illustrates the essential distinctions between Fourier and non-Fourier heat transfer processes when using shape-dependent hybrid nanofluids. To capture the non-Fourier heat conduction phenomena, the Cattaneo–Vernotte model is employed. The study explores three types of nanoparticle shapes—spherical, cylindrical, and platelet—each affecting thermal performance differently. Numerical solutions for the one-dimensional parabolic and hyperbolic heat equation are solved using the centered implicit finite difference method. Through graphical analysis, the paper reveals the impact of various parameters on the thermal distribution of the exponential fin immersed in the hybrid nanofluid, with results plotted against dimensionless length and time. The findings highlight that platelet-shaped nanoparticles result in the most significant improvement in heat transfer rates, offering valuable insights for the design of efficient fin structures.</p>

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Transient thermal analysis in convective–radiative exponential profiled fins in shape-dependent hybrid (MoS2–TiO2–C6H14O) nanofluids: a comparative study on Fourier and non-Fourier heat conduction

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • C. G. Pavithra,
  • B. J. Gireesha

摘要

In advanced electronic devices, enhancing heat transfer efficiency often involves utilizing extended surfaces. This paper illustrates the essential distinctions between Fourier and non-Fourier heat transfer processes when using shape-dependent hybrid nanofluids. To capture the non-Fourier heat conduction phenomena, the Cattaneo–Vernotte model is employed. The study explores three types of nanoparticle shapes—spherical, cylindrical, and platelet—each affecting thermal performance differently. Numerical solutions for the one-dimensional parabolic and hyperbolic heat equation are solved using the centered implicit finite difference method. Through graphical analysis, the paper reveals the impact of various parameters on the thermal distribution of the exponential fin immersed in the hybrid nanofluid, with results plotted against dimensionless length and time. The findings highlight that platelet-shaped nanoparticles result in the most significant improvement in heat transfer rates, offering valuable insights for the design of efficient fin structures.