Gamal, HishamHishamGamalKotb, Mohammed AbbasMohammed AbbasKotbAbdel-Maksoud, MoustafaMoustafaAbdel-MaksoudAhmed, Tamer MahmoudTamer MahmoudAhmed2024-04-122024-04-122024-04-048th International Symposium on Marine Propulsors (smp 2024)978-82-691120-5-4https://hdl.handle.net/11420/46456The hull-propeller interaction has a significant impact on the propulsion performance of ships. The interaction parameters are mostly investigated under the assumption of calm water conditions, although in real operation, the influence of the waves and ship motion may be significant. The aim of the study is to determine the influence of head-waves on the interaction between the hull, the propeller, and the rudder as well as on the overall propulsive efficiency. In this numerical study, the viscous flow on the KRISO Container ship (KCS) model is calculated in calm water and in head-waves. The required power and propeller performance are estimated at different steepnesses of the incoming waves. The RANS code STAR-CCM+ is applied to evaluate the propulsion performance of the KCS fitted with the KP505 propeller in model scale. A PID controller is applied to keep the ship speed constant in calm water and in waves. The propeller flow is simulated using two approaches, namely, the virtual actuator disk (AD) and the discretized propeller (DP). The numerical setup is validated using published data for propulsion tests at different speeds. The obtained results show that the wave-induced velocity components change the wake field significantly. The increase in the wave steepness leads to a strong fluctuation in the wake velocity field and the required thrust as well as to higher power losses Furthermore, the results obtained confirm that the presence of the rudder behind the propeller leads to an improvement in propulsion efficiency not only in calm water but also in waves.enhttp://rightsstatements.org/vocab/InC/1.0/PropulsionAdded PowerResistanceWave SteepnessHead wavesEngineering and Applied OperationsConference Paper10.15480/882.931910.15480/882.931910.15480/882.9294Conference Paper