Stern profiled recess efficiency for reducing the water resistance of high-speed vessels

Abstract

It is proposed to install a stern profiled recess on the wetted surface of a high-speed vessel, the shape and location of which depends on the size of the body and the speeds used by it. This device changes the pressure distribution on the surface of the selected hull. In the middle recess, a vortex motion is created, in the middle of which the pressure is lowered, which makes it possible to reduce the thickness of the boundary layer. With the proper development of the parameters, the profiled recess can be used to reduce the ship's full resistance. This research was carried out in the software package Flow Vision for obtaining the visualization and the calculations, which confirm that using the proposed device allows to reduce the resistance of the body when moving it in a liquid.