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《Journal of Zhejiang University(Engineering Science)》 2001-01
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A two-parameter pertubation solution for convecting-radiating- conducting fins with variable thermal conductivity

SU Ya-xin,LUO Zhong-yang,GAO Xiang,ZHOU Jin-song,CEN Ke-fa\;(Institute of Thermal Power Engineering, Zhejiang Uni., Hangzhou 310027, China)  
The paper is concerned with a method for solving a steady one-dimentional heat transfer problem of a rectangular straight fin with a temperature-dependent thermal conductivity by regular pertubation. At convection-radiation condition, the constant of fin thermal conductivity variation with temperature and a group parameter consisting of fin thermal conductivity and emission are two small parameters and were chosen as the pertubation parameters. A second-order dual-series pertubation expansion was corried out and solution for the fin temperature and efficiency were presented in terms of a series at an ideal condition of 0 K.
【Fund】: :国家自然科学基金资助项目 !(5 9472 0 2 0 ) ;; 浙江省自然科学基金资助项目! (5 96 0 48)
【CateGory Index】: TK172
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