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So long as we assume tha.t the disturbance produced by the wave motion is infinitesimal, p, the pressure in a fluid, satisfies the equation of Laplace, the same type of equation as defines φ, the elec...tric potential. If, therefore, we can provide the same boundary condition to the distributions of these two quantities, there must exist an equality relation between the pressure and the potential. Accordingly we find it possible to reduce a hydrodynamical problem of wave-making resistance of a ship to a simple measurement. of an electric quantity. This is the principle of the electric analogy of wave problems.
This technique may be not only able to dispense with the calculation of ship waves which is so much complicated but by taking the wave-profiles observed in the model basin as the boundary conditions, we shall be enabled to obtain the data of the wave resistance of a ship in a form completely separated from the skin friction when we analyse model ship experiments.続きを見る
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Mendeley出力
