There have been many studies on sump models but existing studies of pump sump models mainly validate fluid flow and vortex around a pump intake using a single-phase method. In this study, multi-phase method is used for observation of free surface vortex and cavitations occurring by air inhalation and water pressure drop. The purpose of this study is to compare the multi- phase model and the single-phase model to evaluate the difference between them. Also steady and unsteady simulations are conducted to verify the differences in results accor ... 전체 초록 보기