Predication of nonlinear heat transfer in a convective-radiative fin with temperature-dependent properties by the collocation spectral method
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论文类型：期刊论文
发表时间：2016-01-02
发表刊物：NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS
收录刊物：SCIE、EI、ESI高被引论文
卷号：69
期号：1
页面范围：68-83
ISSN号：1040-7790
摘要：The applicability of the collocation spectral method (CSM) for solving nonlinear heat transfer problems is demonstrated in a convective-radiative fin with temperature-dependent properties. In this method, the fin temperature distribution is approximated by Lagrange interpolation polynomials at spectral collocation points. The differential form of the energy equation is transformed to a matrix form of algebraic equations. The computational convergence of the CSM approximately follows an exponential decaying law; and thus, it is a very simple and effective approach for a rapid assessment of nonlinear physical problems. The effects of temperature-dependent properties such as thermal conductivity, surface emissivity, heat transfer coefficient, convection-conduction parameter, and radiation-conduction parameter on the fin temperature distribution and efficiency are discussed.
发表时间：2016-01-02