Wang, JianhuaJianhuaWangWang, WentaoWentaoWangWan, DechengDechengWan2024-04-122024-04-122024-04-048th International Symposium on Marine Propulsors (smp 2024)978-82-691120-5-4https://hdl.handle.net/11420/46482The interactions between a ship's hull and podded propulsors differ significantly from traditional hullpropeller interactions, leading to distinct influences on self-propulsion performance. In this study, we employed an in-house Computational Fluid Dynamics (CFD) solver, naoe-FOAM-SJTU, to predict the self-propulsion capabilities of a twin-screw cruise ship equipped with podded propulsors. Dynamic overset grid method is used to deal with the complex motions of ship hull-propeller system. The podded propulsor is simplified by introducing a gap between geometry of rotating propeller and pod for easy distribution of overset grids. Open water simulations were firstly conducted and compared with the experiment. Self-propulsion calculations were then carried out based on fully discretized approach and simulation results, such as thrust and torque, agree well with the available experimental data. Flow visualizations, such as pressure distribution on hull surface and podded propulsors, wake flow, vortical structures, etc. were presented and analyzed. The results showed that the present numerical approach is suitable and reliable in predicting the self-propulsion performance of ship selfpropulsion with podded propellers.enhttp://rightsstatements.org/vocab/InC/1.0/Ship self-propulsioncomputational fluid dynamicsoverset grid methodpodded propellersship hull propeller interactionEngineering and Applied OperationsConference Paper10.15480/882.934510.15480/882.934510.15480/882.9294Conference Paper