Wassermann, SvenSvenWassermannKöllisch, NikolaiNikolaiKöllischAbdel-Maksoud Gomaa, MoustafaMoustafaAbdel-Maksoud Gomaa2019-03-132019-03-132019Fluid Mechanics and its Applications (119): 191-209 (2019)http://hdl.handle.net/11420/2142© Springer Nature Switzerland AG 2019. A RANSE-CFD method is applied to estimate the roll damping of a modern twin-screw RoPax vessel. The simulations are carried out in full scale and with an undisturbed water surface. The harmonic forced roll motion technique is implemented. The influence of ship speeds, the vertical position of the roll axis and roll amplitudes up to 35° are investigated. The interaction between the bilge keels and the ship hull is analyzed. The damping effects of further appendages are discussed. All simulation results are compared with the established method developed by Ikeda and a neural network method based on Blume’s roll damping measurements. The established methods were developed based on studying results of single-screw ships. It can be concluded that both established methods provide acceptable results in certain ranges. For large roll amplitudes, the established methods are out of range and cannot deliver reliable results.enBook Part10.1007/978-3-030-00516-0_11Other