지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.11
- 수록면
- 3,120 - 3,123 (4page)
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초록· 키워드
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In the present study, using a high-speed two-phase particle image velocimetry, we measure the time-resolved velocity field around a large deformable bubble rising near a vertical wall, which is known to show various motions such as bouncing, sliding and departing while interacting with the wall in stagnant water. The Reynolds and Weber numbers are about 1100 and 4.4, respectively, based on the diameter and terminal velocity of the bubble without the wall. The non-dimensionalized initial distance between the bubble center and the acrylic (that is having a conventional no-slip boundary condition) wall (s/req) is varied from 0.26 to 4.08. While the bubble is rising, asymmetric vertical structures are generated in the wake region and become more skewed when the bubble collides with the wall; i.e., a secondary vortex is induced by the wall effect, also indicating the loss of bubble’s kinetic energy. In addition to this, in this paper, different bubble-wall-induced flow structures will be discussed in connection with the different bubble motion near the wall as shown before.
목차
Abstract
1. 서론
2. 실험 장치 및 실험 조건
3. 실험 결과 및 토의
4. 결론
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