On Steady Wave in Circulating Water Channel

Abstract

The problem of a steady surface wave in a circulating water channel is discussed in this paper mainly concerning its effects on the resistance of a ship model and also the relation between the form of a wave suppressor located at the outer edge of the nozzle and the steady wave. The resistance component of Froude-Krlov force working on the ship model in a steady wave is calculated using Motora's approximate method and the diffraction force using slender body theory. The comparison of these values with the measured shows that Froude-Krylov force plays an important role about the resistance variation of a ship model in the steady wave. The form of the wave suppressor is found to have a linear relation to the steady wave.