肥大船まわりに発生する剥離渦に関する研究

抄録

There exist the bow and stern bilge vortices as well as the counter-rotating stern vortices around the full ship, which are all closely connected with resistance and propulsion of the ship. In this paper numerical calculations of the motion of the bow bilge vortex and the circulations of the bow and stern bilge vortices are carried out. The locus of the vortex center is calculated by applying the two-dimensional line vortex approximation and the conformal mapping method. The circulations of vortices are obtained by integrating the pressure differences at the both ends of the boundary layer involved into the separation vortices. The calculated values agree with the measured values with acceptable accuracy.