기체-액체 밀도차에 대한 슬로싱 충격압력의 실험적 고찰

This paper considers an experimental study on the effect of density ratio between gas and liquid for sloshing impact pressure. Generally, air and water are used for sloshing experiments to observe the sloshing phenomena of liquefied natural gas (LNG) inside cargo tank. However, the density ratio of air and water is different with the one of NG and LNG. In order to investigate the effect of density ratio for sloshing impact pressure, 2D and 3D tests are carried out by using mixed heavy gas instead of air. The heavy gas is made of the sulfur hexafluoride(SF6) and the nitrogen(N2). The sloshing impact pressure and rise time are observed for the different density ratios of heavy gas and water, and it is found that those are significantly affected by the density ratio of gas and liquid.