Numerical analysis of distance between rudder and Propeller on their hydrodynamics parameters for palning craft

Today, with significant advances in the maritime industry, body design and appendages, including Propellers, rudders, and surface control systems, have many changes. One of the topics of interest these days is high-speed vessels, which increase their speed and maneuverability. With the advancement of technology and new designs in the field of Propellers design, today Propellers called Surface piercing Propellers (SPP) are widely used in high-speed vessels. Because high-speed vessels have low levels of contact with water, these propellers cause very high efficiency at high speeds. One example of this butterfly is the Oloffson Propellers, which is available to researchers as a research sample. In this study, the Oloffson Propellers model was used to test the Propeller at different distance from the rudder. In this research, by using of ANSYS-CFX software, the interaction between Propeller and rudder at three different distances from each other were tested, and the thrust and torque produced by the Propeller are calculated in a complete cycle. Also, the effect of force and torque produced by the Propeller on the rudder is examined. The aim of this study is to provide a background for rudder installation optimum position on planing boats.