Fin efficiency analysis of convective straight fins with temperature dependent thermal conductivity using variational iteration method


Coskun S. B. , ATAY M. T.

APPLIED THERMAL ENGINEERING, cilt.28, ss.2345-2352, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

For enhancing heat transfer between primary surface and the environment, utilization of radiating extended surfaces are common. Especially for large temperature differences; variable thermal conductivity has a strong effect on performance of such a surface. In this paper, variational iteration method is used to analyze the efficiency of convective straight fins with temperature dependent thermal conductivity. VIM produces analytical expressions for the solution of nonlinear differential equations. In order to show the effectiveness of Variational iteration method (VIM). the results obtained from VIM analysis is compared with available solutions obtained using Adomian decomposition method (ADM) and the results from finite element analysis. This work assures that VIM is it promising method for the efficiency analysis of convective straight fin problems. (C) 2008 Elsevier Ltd. All results reserved