Periodic Heat Transfer in the Fins with Variable Thermal Parameters

Yang Xiangxiang; He Hongzhou

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Article Navigation > Applied Mathematics and Mechanics > 1996 > 17(2): 163-173

Yang Xiangxiang, He Hongzhou. Periodic Heat Transfer in the Fins with Variable Thermal Parameters[J]. Applied Mathematics and Mechanics, 1996, 17(2): 163-173.

Citation:

Yang Xiangxiang, He Hongzhou. Periodic Heat Transfer in the Fins with Variable Thermal Parameters[J]. Applied Mathematics and Mechanics, 1996, 17(2): 163-173.

Citation:

Yang Xiangxiang, He Hongzhou. Periodic Heat Transfer in the Fins with Variable Thermal Parameters[J]. Applied Mathematics and Mechanics, 1996, 17(2): 163-173.

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Periodic Heat Transfer in the Fins with Variable Thermal Parameters

Yang Xiangxiang¹,
He Hongzhou^1,2

1.
Department of Mechanical Engineering, Huaqiao University, Quanzhou, Fujian 362011, P. R.China;
2.
Department of Food Engineering, Xiamen Fisheries College, Xiamen 361016, P. R. China

Received Date: 1993-10-24
Publish Date: 1996-02-15

Abstract

Abstract

A Study 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 solved noniteratively by shooting method and superposition method. For afin 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 co1ductivity.N-characteristic parameter of finned heat trat transfer, ε-amplitude parameter of temperature.fluctuation, B-frequency parameter of temperature.fluctuation of the.fin, and the changing pattern of convective coefficient. The influences of these parameters on temperalure distribution, heat-flow rate. and fin efficiency are discussed. In addition to theoretical significance, the results are of practical significonce for engineering design.
- variable thermal parameters,
- perturbation,
- principle of superposition

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References(5)

References

[1]	杨翔翔、何宏舟,肋片温度周期变化的传热研究,中国工程热物理学会1993年学术年会征文(1993).
[2]	A,Aziz and T,Y,IVa,Periodic heat-transfer in fins with variable thermal parameters,Tournal of Heat&Mass Transfer,Q4(8)(1981),1397-1404.
[3]	T.Y,Na,Computational Methods in Engineering Boundary Yalue Problems,Academic Press,New York(1979),13-28.
[4]	M,K,lain,Numerical Solutions of Differential Equations,Halstaed Press(1979),77-81
[5]	郭大钧等,《大学数学手册》,山东科学技术出版社(1985),180-195.