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Propulsive Performance Analysis of Ducted Marine Propulsors with Rotor-Stator Interaction  

Jang, Jin-Ho (School of Mechanical Engineering, Pusan National University)
Yu, Hye-Ran (School of Mechanical Engineering, Pusan National University)
Jung, Young-Rae (Agency for Defense Developmen)
Park, Warn-Gyu (School of Mechanical Engineering, Pusan National University)
Publication Information
Journal of Ship and Ocean Technology / v.8, no.1, 2004 , pp. 31-41 More about this Journal
Abstract
A ducted marine propulsor has been widely used for the thruster of underwater vehicles for protecting collision damage, increasing propulsive efficiency, and reducing cavitation. Since a single-stage ducted propulsor contains a set of rotor and stator inside an annular duct, the numerical analysis becomes extremely complex and computationally expensive. However, the accurate prediction of viscous flow past a ducted marine propulsor is essential for determining hydrodynamic forces and the propulsive performances. To analyze a ducted propulsor having rotor-stator Interaction, the present work has solved 3D incompressible RANS equations on the sliding multiblocked grid. The flow of a single stage turbine flow was simulated for code validation and time averaged pressure coefficients were compared with experiments. Good agreement was obtained. The hydrodynamic performance coefficients were also computed.
Keywords
ducted marine propulsor; rotor-stator interaction; RANS equations; sliding multiblock technique; hydrodynamic performances;
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