A 3D flow separation model for open propellers with blunt trailing edge

The panel method is widely used in the design and analysis of marine propellers. However, this cannot handle propellers with a blunt trailing edge due to lack proper models for flow separation downstream. In study, numerical scheme, i.e., three-dimensional model, proposed enable be applied edge. zone represented as an extension criteria zero local lifts moments over all blade sections are establish equations that determine shape zone. Those solved either by Newton–Raphson or optimization problem. A low-order coupled boundary layer solver (the viscous/inviscid interaction method) predict pressure distributions forces extended geometry. To validate propeller compared those from solving Reynolds-Averaged Navier–Stokes equations. predicted open water characteristics controllable pitch experimental measurements at wide range advance ratios different pitches. This model requires much less computational effort while preserving high accuracy, thus can reliably designing analyzing