Wang, ZhaoyuanZhaoyuanWangPark, SungtekSungtekParkStern, FrederickFrederickStern2024-04-122024-04-122024-04-048th International Symposium on Marine Propulsors (smp 2024)978-82-691120-5-4https://hdl.handle.net/11420/46495In the present study, numerical simulations of the unsteady cavitation flows around a pitching foil are performed with a focus on the effects of the pitching motion on the cavity behavior and forces. Sinusoidal pitching motions are imposed to the foil with the reduced frequencies and amplitude in the same range of most practical propeller applications. It has been found that the maximum cavity length decreases with the reduced frequency first and then increases, which is in good agreement with the experimental observations. The simulation results show that the cavity is very unstable at low oscillating frequencies and tends to be stable at high frequencies. The force exhibits the same oscillating frequency and phase as the angle of attack. The amplitude of the lift increases with the frequency, and the mean value of the lift decreases with the frequency first and then increases. The numerical issues and challenges of the simulations of the forced unsteady cavitation flows are addressed. Future work will be focused on scale resolved turbulence and more advanced cavitation models.enhttp://rightsstatements.org/vocab/InC/1.0/Unsteady cavitationpitching foiloscillationCFDEngineering and Applied OperationsConference Paper10.15480/882.935810.15480/882.935810.15480/882.9294Conference Paper