요트의 전,후 세일 사이의 간섭 효과에 대한 수치해석

Abstract

It is important to understand the flow characteristics around the sails of sailing yacht, especially two sail system for a sloop yacht. In this paper, a computational aerodynamic investigation is performed over sail-like airfoil sets, based on the main and jib sails of a 30 feet sailing yacht. Lift and drag forces including the flow visualization are obtained for the conditions of slit distance between the two sails and for the conditions of overlapped length of jib sail. Also the thrust force and CE(center of effort) location of sail sets are obtained by calculation. It is founded that the combination of two sails makes the thrust force higher than when the each sail exists respectively, and the slit distance of the two sails are important factor to increase lift force.