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
- 2012.11
- 수록면
- 178 - 184 (7page)
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초록· 키워드
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The differences of physical properties of water and air are the source of instabilities of the numerical solutions considering the free surface flow. The most typical methods for the free surface such as Volume Of Fluid(VOF) and Level-Set(LS) methods impose transient zones where the physical prosperities vary gradually for the stabilities of solutions. The thickness of the transient zone is the source of the error of a solution. The marker-density method does not use such a transient zone. In the traditional marker-density method, however, the air velocities of free surface cells are extrapolated from the water velocity and the pressures on the free surface are extrapolated form the air pressures for the stability of a solution. Those extrapolations are also the source of the error of the solution. In this study, the marker-density method is modified to calculate the air velocities of free surface cells by determining the pressure and velocity on the free surface to get continuous pressure gradient and viscous stress. Two-dimensional steady spilling breakers behind of a submersed hydrofoil is simulated using INHAWAVE-II including the modified marker-density(MMD) method. The results are compared with the results of Fluent V6.3 including VOF method and published research results. Moreover, three-dimensional spilling breaker near a wedge shaped ship model is simulated using INHAWAVE-II. And the results are compared with the results of Fluent V6.3 and exist experimental data.
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3. 수치시뮬레이션
5. 결론
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UCI(KEPA) : I410-ECN-0101-2014-422-000810525