Acknowledgement
Supported by : 경남대학교
Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)
- Volume 5 Issue 3
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- Pages.193-200
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- 2002
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
An Experimental Study on Heat Transfer Characteristics with Turbulent Flow in a Cylindrical Annuli
원형이중관내의 난류유동의 열전달 특성에 관한 실험적 연구
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Chang, Tae-Hyun
(Division of Mechanical and Automation Eng. Kyungnam Univ.)
;
- Lee, Kwon-Soo (Department of Automotive Jinju College)
- Received : 2002.04.18
- Accepted : 2002.08.20
- Published : 2002.08.31
Abstract
An experimental study was performed to study heat transfer characteristics for turbulent flow in an axisymmetric annuli. The air flow temperature and the local Nusselt number in turbulent flow were measured or calculated for Re=30,000, 40,000, 50,000, 60,000, 70,000 and 80,000. The local Nusselts number were compared to that obtained from Dittus-Boelter equation with turbulent flow. The results show that the flow enhances the heat transfer in the initial and exit portion of the test tube.