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
- 2013.12
- 수록면
- 348 - 353 (6page)
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초록· 키워드
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The two-fluid model is a practical approach in two-phase flow applications. Removing the wall drag term in the averaged momentum equation for dispersed phase, based on visual observations that most bubbles/droplets do not contact the wall, causes the dispersed phase to be faster than the continuous phase even though flow is fully-developed. In this study, the volume-averaged momentum equations working at dispersed flow are formulated, based on the equation of a single fluid particle motion. Therefore, each force term can be exactly identified and interpreted. It is shown that the wall drag term in the dispersed phase is associated with the shear stress of the continuous phase; the wall drag term exists even when the dispersed phase does not contact the wall. It is also shown that the wall drag force on each phase is the total pressure drop multiplied by the corresponding phase volume fraction. This wall drag partitioning successfully elucidates the dispersed phase velocity. For example, the bubble is faster than the water in a contraction while the former is slower than the latter in an expansion. Opposite phenomena occur in droplet flow.
목차
Abstract
1. 서론
2. 입자 방정식에 기초한 2-유체 방정식
3. 토론
4. 결론
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