Studi Numerik Pengaruh Variasi Bentuk Bilah Pada Paddle Wheel Terhadap Performa Kapal Wisata

Abstract

This study analyzes the performance of paddle wheel blades with an NACA 2412 profile as an alternative propulsion system for river cruise ships. The paddle wheel used has 8 blades with a diameter of 0.84 m, a blade length of 0.21 m, and a blade width of 0.50 m. The NACA 2412 profile was chosen because it has moderate camber, that can provide optimal thrust distribution compared to symmetrical airfoils. Numerical simulations were performed using the compuuter model method with transient. The paddle wheel rotation speeds were 125 RPM and 250 RPM. The simulation results showed that at 125 RPM, the paddle wheel with 8 blades with the NACA 2412 profile produced a thrust of 1567.39 N. At 250 RPM it increased significantly to 3154.90 N. The thrust value proved that the NACA 2412 blades with an 8-blade is configuration to provide capable the operational needs of thrust boat to travel at a speed of around 8.5 knots (4.37 m/s). Computere models therefire boat, paddle wheel blades using the NACA 2412 profile are recommended as the optimal design because they are capable of producing high thrust while being efficient for use on river tourist boats.