대한설비공학회지:설비저널 (The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea)
- 제11권3호
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- Pages.1-8
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- 1982
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- 1229-6430(pISSN)
열평형적분법에 의한 사다리꼴단면의 직선휜에서의 열전달해석
Heat Transfer Analysis in a Straight Fin of Trapezoidal Profile by the Heat Balance Integral Method
초록
When exact analytical solutions to certain type of heat conduction problems are quite cumbersome or not obtainable, it is important to introduce approximate analytical methods which are simple and useful compared with numerical methods. In this study, therefore, the Heat Balance Integral Method is applied to analysis of steady-state conduction in a straight fin of trapezoidal profile, and the two-dimensional temperature distribution in the fin and the approximate fin efficiency are obtained. Results are compared with those by the one- dimensional analysis and two-dimensional numerical analysis for a wide range of Biot numbers. It is shown that the two-dimensional temperature distribution obtained by the integral method is in good agreement with that by the finite element method at Biot numbers for which the result by the one-dimensional analysis is unreliable.
키워드