NONLINEAR HEAT TRANSFER IN RECTANGULAR FINS AND EXACT SOLUTIONS WITH TEMPERATURE DEPENDENT PROPERTIES

Bu makalede fin problemlerinin doğrusal olmayan ısı transferi için geçerli olan genel çözüm formüllerinin ortaya konması hedeflenmektedir. Her nekadar sıcaklığa bağlı ısı geçirgenliği ve ısı katsayıları hakkında daha önceden bazı çalışmalar yapılmış olsa da, bazı hallerde bu çalışmaların yetersiz oldukları gösterilmiştir. Bu makalede sunulan yeni formüller fin taban ısı transferi, fin verimliliği ve fin bitim noktası sıcaklığı gibi ilgi çekici fiziksel özellikleri daha iyi anlamamıza ve analiz etmemize yardımcı olacaktır.

DİKDÖRTGENSEL FİNLERDE DOĞRUSAL OLMAYAN ISI TRANSFERİ VE SICAKLIĞA BAĞLI FİZİKSEL BÜYÜKLÜKLER İÇİN ANALİTİK ÇÖZÜMLER

It is aimed to present general exact solution formulae valid for the nonlinear heat transfer of fin problems in this paper. Although some analytical solutions were previously worked out for temperature dependent thermal conductivity and heat transfer coefficients, they are shown to be inadequate in some cases. The presented formulas enable us to better understand the physical properties of interest in terms of the fin base heat transfer rate as well as fin efficiency and fin tip temperature.

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