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From the Navier_Stokes equations, the integral expressions of the free_surface elevation and the velocity field in ship waves of a moving waterborne body are obtained. Next, Lighthill’s two_stage scheme is employed to change the above_mentioned integral expressions to algebraic expressions. Compared with the results obtained when the seawater is idealized to an inviscid fluid, the singularities are dispelled or weakened, and the accuracy of the digit information of ship waves is improved.
From the Navier_Stokes equations, the integral expressions of the free_surface elevation and the velocity field in ship waves of a moving waterborne body are obtained. When, with Lighthill’s two_stage scheme is employed to change the above_mentioned integral expressions to algebraic expressions. Compared with the results obtained when the seawater is idealized to an inviscid fluid, the singularities are dispelled or weakened, and the accuracy of the digit information of ship waves is improved.