지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.10
- 수록면
- 276 - 279 (4page)
이용수
초록· 키워드
오류제보하기
The main objective of this study is to analyze flow and heat transfer characteristics of a heat exchanger in an industrial application using a high-fidelity simulation. LES was performed to analyze turbulent flows around a fin-tube heat exchanger inside an enclosure. Because of the wide range of the local Re in the complex geometry, various scales of 3-D vortices and complex flow patterns were generated. Tests with the grid resolution and inflow condition were performed carefully, in order to compare our results with the data from a MRV experiment as well as the results from RANS. The complex flow patterns like 3-D vortices were visualized using various techniques. A few interesting flow phenomena were observed which are different from the results of a plain fin-tube heat exchanger such as helical flows and a jet stream observed behind the fin-tube region. The complex flow structures and spatial pressure imbalance were found in the fluctuation of the jet stream. To enhance the efficiency of the computational costs, a few performance factors of the heat exchanger were compared with the results of the plain fin-tube things. As the results, numerical technique was derived to reduce the computational costs, using a porous media model.
목차
Abstract
1. Introduction
2. Achievement
3. Conclusion
4. References
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