Comparative Study of Rudder Performance of Single Plate and Fishtail of SPOB Ship Using CFD Method
Keywords:Rudder, Fishtail, CFD, Self Propeller Oil Barge
Rudder is the most important hydrodynamic control surface on a ship to control horizontal movement. An important function of the rudder is to develop a force concerning orientation and motion relative to the water. The widely used type is the conventional type. However, the other types of rudders, other than the conventional type, are the single plate and fishtail types. This study aims to analyze the difference in performance between the single plate rudder on the Adeline 01 spob (self propeller oil barge) ship and the fishtail rudder on the value of lift force and drag force as well as find out the comparison of the two Rudders on the maneuvering force of the Adeline 01 spob ship. The method used was the Clark equation with the help of a CFD-based application to determine the performance of the ship lifts force and drag force by varying the turning angle by 5°, 10°, 15°, 20°, 25°, and 30°. The results obtained from this study was the Fishtail has better maneuverability at 5° and 10° angle variations with lift coefficient values of 0.0398 and 0.0522, and with Steady Turning Diameter (STD) values of 1882.9 m and 717.83 m. On another hand, the Single Plate rudder has better maneuverability at angle variations of 15° and 20° with lift coefficient values of 688.30 m and 330.77 m, and with STD values of 688.30 m and 330.77 m. At the angle variations of 25° and 30°, Rudder Fishtail has better maneuverability with lift coefficient values of 0.7712 and 0.9993, and with Steady Turning Diameter (STD) values of 53.40 m and 35.92 m
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