설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)
- 제10권4호
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- Pages.440-448
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- 1998
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
원형 실린더 주위의 공기로 국소 대류 열전달에 대한 열전도의 영향
The effect of wall heat conduction on local convection heat transfer from a cylinder in cross flow of air
초록
This paper considers the influence of circumferential wall heat conduction for the case of forced convection around a circular cylinder in cross flow of air. Keeping uniform heat generation from the inner surface of the cylinder in radial direction, heat is transferred by wall conduction in the circumferential direction due to the asymmetric nature of the temperature distribution of the cylinder and by convection around the perimeter of the cylinder. The wall conduction depends on conductivity of the cylinder and size of the cylinder radius and thickness and affects the local convective heat transfer rate significantly for geometrically similar surfaces and flow conditions. A nondimensional conjugation parameter K. (=k
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