Abstract
The equivalent source singularities distributed over the hull are analysed based upon the exact linear free surface condition. The role of “Line Integral” on the Neumann-Kelvin problem is primarily studied, which since Brard's suggestion calls intensive discussions.The present analysis shows two kinds of solutions for Wigley model. One is for the surface piercing body. The other is for the limiting case of the submerged body. Comparing the both results the prominent contribution of the line integral term is clarified.1) “Line Integral” has a serious contribution on the determination of the source of the main hull just beneath the free surface.2) It brings the better prediction of the wavemaking resistance.3) “Line Integral” should be taken into account for mathematical consistency of the boundary value problem.
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