Periodic heat transfer in the fins with variable thermal parameters

✍ Scribed by Yang Xiangxiang; He Hongzhou

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 592 KB
• Volume: 17
• Category: Article
• ISSN: 0253-4827
• DOI: 10.1007/bf00122313

✦ Synopsis

A stud)' is made on the periodic heat transfer in the fins with variable thermal parameters. The method of small parameter perturbation is adopted. Numerical calculation is soh,ed noniterativety by shooting method and superposition method. For a fin of certain shape with periodic change of fin base temperature, the heat transfer is influenced by the following parameters." E-temperature function in relation to coefficient of thermal conductivity;N-characteristic parameter of finned heat transfer; e-amplitude parameter of temperature .fluctuation; B-frequency parameter of temperature fluctuation of the fin" and the changing pattern of convective coefficient. The it!fluences of these parameters on temperature distribution, heat-flow rate, and fin efficiency are discussed.• In addition to theoretical significance, the results are of practical significance for engineering design.