Pressure Distribution Around a Bow Flare with Added-Resistance Reduction Effect

Abstract

　SK-Bow is a characteristic bow flare shape and developed to reduce the added wave resistance. It is important to obtain the distribution of added pressure on SK-Bow to clarify the reduction mechanism of the added resistance and consider its required structural strength. For this purpose, we use FBG pressure sensors to compare distributions of the added pressure between SK-Bow and conventional bow flare shape. Through experiments, we found that SK-Bow can reduce the added pressure particularly around the steady ship-side wave profile and hence the added resistance. In other words, we can reduce the added resistance if we could reduce the added pressure around the steady ship-side wave profile by an energy saving device. For about structural strength, we need to consider not only the average pressure but also the amplitude of unsteady pressure on the flare part of SK-Bow.