engleski

Three-dimensional steady state free surface flow computation

A numerical panel method for computing the three-dimensional, steady state potential flow around body submerged beneath an otherwise calm free surface is described. The method uses a sources distribution over body wetted surface and on the free surface. The body surface and a part of free surface are geometrically represented by the quadrilateral panels and the source density is determined in such a manner that the boundary conditions are satisfied. On the body panels the exact boundary condition is satisfied. The kinematic-dynamic boundary condition on the free surface is linearized. The computer program has been developed using this method. The wave resistance of submerged spheroid and body of revolution whose form can be expressed by means of simple mathematical relation is compared with experiment obtained. Values are found to be in good agreement.

Potential flow; free surface flow; Rankine source; panel method; wave resistance

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