Ship Design and Construction
Trieu Van Nguyen, Yoshiho Ikeda
TRIEU VAN NGUYEN, Ph.D. candidate, Department of Marine System Engineering, Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan, e-mail: dx102001@edu.osakafu-u.ac.jp
YOSHIHO IKEDA, Professor, Dean of Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan, e-mail: ikeda@marine.osakafu-u.ac.jp
A development of high lift rudder sections
In this paper, the hydrodynamics characteristics of several types of high lift rudder sections are numerically investigated. These include: fishtail rudder, wedge tail rudder and flat plate at the tail shape. A computational fluid dynamics commercial code, ANSYS FLUENT, is used to calculate the forces and moments. The numerical results show that all developed rudder sections give higher lift and maximum lift than the NACA 0024 rudder section. However, they accompany higher drag force. The small size of tail shape can improve the lift while the drag does not increase significantly. The results can be applied for the 3-D rudder models in further development of marine high lift performance rudders.
Key words: numerical method, marine rudder, lift, drag, fishtail, wedge tail, flat plate.
