Abstract: There are many unresolved issues in Reynolds-averaged Navier-Stokes (RANS) calculations of marine propeller performance, especially in the treatment of complex flow phenomena such as boundary-layer development, scale effects, and tip and hub vortices. The particular focus of this study was to apply three scale-resolving simulation (SRS) methods, i.e. dynamic large eddy simulation (DLES), delayed detached-eddy simulation (DDES), and stress-blended eddy simulation (SBES), to improve the prediction of flow characteristics. Firstly, the effectiveness of the SRS methods was verified by comparing numerical results with experimental data. The external performance of rotating machinery is determined by internal flow structures. Particle image velocimetry (PIV) measurement is established as a visualization tool to analyze the wake evolution of a scaled propeller by velocity and vorticity contours in a specified cross-section plane. We found that SRS methods, especially the SBES model, performed well in predicting characteristic parameters and capturing flow field information via quantitative and qualitative analyses. The ability to accurately predict flow characteristics can make computational tools more effective in meeting the needs of modern propeller design and analysis.

Key words: Propeller; Numerical simulation; Scale-resolving simulation (SRS); Particle image velocimetry (PIV) test

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