Wang, JianhuaJianhuaWangWan, DechengDechengWanAbdel-Maksoud, MoustafaMoustafaAbdel-Maksoud2020-09-212020-09-212020-10International Offshore and Polar Engineering Conference: 2338-2344 (2020-10)http://hdl.handle.net/11420/7357In the present work, ship propulsion performance at different trim angles are investigated. CFD method with dynamic overset grid technique is used to direct simulate the free running ship model. The self-propulsion with design ship speed Fr=0.20 is firstly conducted and the predicted results are compared with experimental data. Then ship with different trim angles varying from-0.8°to 1.6°are simulated to investigate the propulsion behavior at different trim condition. All the numerical simulations are carried out by CFD solver naoe-FOAM-SJTU. Hydrodynamic forces including thrust and torque of twin propellers are analyzed. It is found that the thrust and torque have much different behavior at negative and positive trim angle. The corresponding wake flows at different trim angles are responsible for the above propulsion characteristics.enComputational fluid dynamicsOverset grid methodShip hydrodynamicsShip propulsionTrim effectConference PaperOther