Calculation of Steady-State Ship Wave Patterns Using a General Rankine Source Method

摘要

A general time-domain method is introduced that is capable of solvingrnboth steady and unsteady fluid flow around realistic hull forms. Anrnindirect boundary-integral method is formulated by distributingrnRankine point sources outside the fluid domain. The resulting initialboundaryrnvalue problem is solved by employing the Euler-Lagrangernapproach to evaluate the unknown velocity field at a series of timernsteps. Individual nodes on the free surface are tracked by time-steppingrnthe free surface boundary conditions. By way of example, the presentrnmethod is applied to solve the two-dimensional flow around a circularrncylinder submerged in an infinite fluid and the three-dimensionalrnsteady flow around a Wigley hull travelling in an initially undisturbedrnfree surface.