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Journal of Engineering Mathematics

, Volume 76, Issue 1, pp 181–193 | Cite as

Thermal performance analysis of arbitrary-profile fins with non-fourier heat conduction behavior

  • Keivan Bamdad
  • Aziz Azimi
  • Hossein Ahmadikia
Article

Abstract

The thermal performance of variable cross-section fins is considered using the Maxwell–Cattaneo–Vernotte (MCV) heat conduction model. Four different fins, namely rectangular, triangular, convex, and concave fins, with a periodic thermal condition are examined. The governing equations are hyperbolic and are solved numerically using an implicit finite difference method. In the MCV model, the thermal wave propagates with a finite speed, and hence sharp discontinuities appear in the temperature profiles. In this study, temperature profiles at various times, heat transfer rates, and thermal efficiencies of Fourier and non-Fourier fins are presented. In addition, the effect of relaxation time is considered. The results show that the effects of cross-sectional area and relaxation time are considerable on the thermal performance of various non-Fourier fins. To validate our findings, the results for non-Fourier fins with constant cross-sectional area obtained from this study are compared to those of other numerical solutions. This comparison confirms the correctness of the current results.

Keywords

Extended surfaces Finite difference method Maxwell–Cattaneo–Vernotte wave model Periodic thermal conditions 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Takestan BranchIslamic Azad UniversityTakestanIran
  2. 2.Department of Mechanical Engineering, Faculty of Engineering, Ahvaz BranchIslamic Azad UniversityAhvazIran
  3. 3.Department of Mechanical EngineeringIsfahan UniversityIsfahanIran

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