저속비대선미에서 타 주위 유동의 수치시뮬레이션

초록

The development of high-lift rudder is needed because low speed full ships such as VLCC are difficult to get enough lifting force from a common rudder. The rudder of a ship is generally positioned behind the hull and propeller. Therefore, if a rudder is designed, it should be considered those interactions between hull, propeller and the rudder. In the present study, Fluent code and body fitted mesh systems those are generated by Gridgen program are adopted for the numerical simulations of flow characteristics around a rudder that is interacted with hull and propeller. SMM (Sliding Mesh Model) is adopted to consider the interaction between propeller rotating and wake flows behind hull. Several cases of the numerical simulations are performed to compare interactions, such as, hull-rudder, propeller-rudder and hull-propeller-rudder interactions. Also, It is considered relation between the interactions. The present results of the numerical simulations show the variation of flow characteristics by the interaction between hull, propeller and rudder, and these results are compared with a experiment result. Consequently, when high-lift rudders are designed, it is thought that the numerical simulations could be utilized effectively.