A Generalized Hybrid RANSE/BEM Approach for the Analysis of Hull–Propeller Interaction in Off-Design Conditions

During maneuvers, propellers’ operation differs from their design due to strong modification of the wake field with respect straight-ahead motion. The consequent loads overstresses mechanical components shaftline, exacerbates propeller side effects and worsens overall efficiency. Therefore, analysis these situations in early phase is pivotal increase capabilities safety at sea. This task relies on novel tools capable accurately predict complex flow that develops past hull loads. Since solution fully coupled problem rotating by viscous solver impractical for routine applications, hybrid approaches are a viable alternative. In this paper, an interactive RANSE/BEM methodology presented, where replaced body forces map actual loading state blades, allowing unsteady hull–propeller interaction. applied straight ahead 8.4° pure drift motions twin screw propulsive configuration. Last, but not least, study presents validation accurate experimental data nominal single blade