자유수면의 경계면에서 해의 번짐을 줄이기 위한 경계면 압축 기법 및 주상체에의 적용

Abstract

A high speed planing hull is mostly supported by hydrodynamic lift force rather than buoyancy force. The lift force directly influences the running attitude of the planing hull such as trim and sinkage. And the pressure distribution is strongly related to the solution of a free-surface flow around a planing hull. To handle free-surface flow volume-of-fluid (VOF) method have been widely used even it has a disadvantages of interface smearing. In the present study, a new dynamic interface compression method were introduced to reduce interface smearing and avoid unphysical solution. The dynamic compression consists of a function of angle of the flow direction and free-surface. The method was implemented and validated by prismatic body problem.ngly related to the solution of a free-surface flow around a planing hull. To handle free-surface flow volume-of-fluid (VOF) method have been widely used even it has a disadvantages of interface smearing. In the present study, a new dynamic interface compression method were introduced to reduce interface smearing and avoid unphysical solution. The dynamic compression consists of a function of angle of the flow direction and free-surface. The method was implemented and validated by prismatic body problem.