Modeling and numerical analysis of propulsion system of hubless rim

In recent decades, the increasing demand for high-speed ocean vehicles in commercial and navy applications has driven the design of more efficient of propulsion systems.As a result, a Rim Driven (Tip Driven) thruster which has become an appropriate alternative in the contemporary design.In This paper, the open water hydrodynamic performance of the four blade hubless Rim driven thruster models at various pitch ratios were investigated by employing the RANS solver andTwo-equation turbulence model k–ε in Ansys-Fluent 14.5. The pressure, velocity and x vorticity distribution in different distances from downstream and various advance coefficients were illustrated and discussed.