On Influence of Turbulence Modelling on Cavitation Prediction for Flow Around P1356 Ship Propeller

The goal of this work is to get a deeper understanding of the structure of the flow around a propeller of a passenger ship, specially the pressure field, where turbulent fluctuations and cavitation can lead to pressure oscillations, vibration and noise. The accurate prediction of cavitation has been found out to be intrinsically related to the accurate resolution of turbulent structures of the flow. Therefore, a thoroughly analysis of the turbulence modeling in this kind of application was performed. Following the Best Practice Guidelines (BPG) [1] different grids and turbulence models have been investigated. The numerical results obtained have been compared to the experimental data generated at SVA Potsdam, which includes transient pressure signals as well as cavitation patterns. A highly satisfactory agreement between numerical solutions and experiments is observed for the finest grids and a scale-resolving turbulence modeling approach (DES/SAS).