자유수면 유동 해석을 위한 경계면 포착 기법들에 대한 비교 연구

To analyze flow around a floating body such as ships or floating structures, free-surface flow should be considered. In the present study, free-surface solution methods were implemented in SNUFOAM，which is based on the open source CFD library OpenFOAM. In SNUFOAM, volume-of-fluid (VOF) method, which uses high resolution differencing schemes to preserve both the sharpness of interface and boundedness of volume fraction was adopted for free-surface flows. In the code, several high resolution differencing schemes such as CICSAM, HR1C, M-CICSAM and modified HRIC were implemented and tested. The schemes were verified by Rudman translation test and Zalesak slotted disk test which are the canonical benchmarking test for VOF schemes. The schemes were also tested by dam breaking problem, sloshing problem and Reyleigh Taylor instability problem. From the results, the schemes were implemented well to SNUFOAM.