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
- 2013.6
- 수록면
- 39 - 44 (6page)
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초록· 키워드
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The objective of present work is to investigate the performance of enhanced tubes with inner grooves by using a commercial CFD program. Four different enhanced tubes have been studied. G_0 and G_max tubes have no inner grooves on their inner surfaces, therefore, their inner surfaces are smooth. The inner diameter of G_0 and G_max are 8.9 mm and 9.9 mm, respectively. G_6 has 6 inner grooves and G_12 has 12 inner grooves. For all enhanced tubes, Serrated fins are manufactured on their outside surfaces and the inner groove is 1.0mm in width and 0.5mm in depth.
As the number of inner grooves increase from 0 to 6 and 12, the pressure drops for G_6 and G_12 increased by 18% and 20% and the heat transfer rates increased by 7% and 14% under the mass flow rate of 189 kg/hr. In case of G_max, pressure drop and heat transfer rate decreased by 29% and 6% than those of G_0, because G_max have no inner grooves and its diameter is larger than that of G_0 by 1.0 mm.
As the number of inner grooves increase from 0 to 6 and 12, the pressure drops for G_6 and G_12 increased by 18% and 20% and the heat transfer rates increased by 7% and 14% under the mass flow rate of 189 kg/hr. In case of G_max, pressure drop and heat transfer rate decreased by 29% and 6% than those of G_0, because G_max have no inner grooves and its diameter is larger than that of G_0 by 1.0 mm.
목차
ABSTRACT
1. 서론
2. 수치 해석 모델 및 지배방정식
3. 해석 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2014-550-003181706