Numerical Analysis of the Impact of Compensating Ducts on Propeller’s Hydrodynamic Performance

Abstract

Based on FCFD method, the multiple reference system MRF model and turbulence model were adopted to conduct numerical analysis on the hydrodynamic performance of propellers with compensating ducts and analyze the impact of compensating ducts on propellers’ front and rear flow fields, thrust coefficient, torque coefficient and efficiency. It is discovered that compensating ducts can enhance the high-speed flow area behind the propeller and play the role of diversion. Under different advance coefficients, the thrust coefficient and torque coefficient of the propeller are increased. The efficiency is obviously improved, and the energy-saving effect of compensation ducts is remarkable.