Non-fourier thermoelastic analysis of an annular fin with variable convection heat transfer coefficient

Haw Long Lee, Win Jin Chang, Wen-Lih Chen, Yu Ching Yang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper numerically investigates the hyperbolic thermoelastic problem of an annular fin. The ambient convection heat transfer coefficient of the fin is assumed to be spatially varying. The major difficulty in dealing with such problems is the suppression of numerical oscillations in the vicinity of a jump discontinuity. An efficient numerical scheme involving hybrid application of Laplace transform and control volume method in conjunction with hyperbolic shape functions is used to solve the linear hyperbolic heat conduction equation. The transformed nodal temperatures are inverted to the physical quantities by using numerical inversion of the Laplace transform. Then the stress distributions in the annular fin are calculated subsequently. The results in the illustrated examples show that the application of hyperbolic shape functions can successfully suppress the numerical oscillations in the vicinity of jump discontinuities.

Original languageEnglish
Pages (from-to)1068-1081
Number of pages14
JournalInternational Journal of Thermophysics
Volume33
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

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fins
heat transfer coefficients
hyperbolic functions
convection
shape functions
discontinuity
oscillations
conductive heat transfer
stress distribution
retarding
inversions
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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abstract = "This paper numerically investigates the hyperbolic thermoelastic problem of an annular fin. The ambient convection heat transfer coefficient of the fin is assumed to be spatially varying. The major difficulty in dealing with such problems is the suppression of numerical oscillations in the vicinity of a jump discontinuity. An efficient numerical scheme involving hybrid application of Laplace transform and control volume method in conjunction with hyperbolic shape functions is used to solve the linear hyperbolic heat conduction equation. The transformed nodal temperatures are inverted to the physical quantities by using numerical inversion of the Laplace transform. Then the stress distributions in the annular fin are calculated subsequently. The results in the illustrated examples show that the application of hyperbolic shape functions can successfully suppress the numerical oscillations in the vicinity of jump discontinuities.",
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Non-fourier thermoelastic analysis of an annular fin with variable convection heat transfer coefficient. / Lee, Haw Long; Chang, Win Jin; Chen, Wen-Lih; Yang, Yu Ching.

In: International Journal of Thermophysics, Vol. 33, No. 6, 01.06.2012, p. 1068-1081.

Research output: Contribution to journalArticle

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