Cfd investigations of ship propulsion performance at different trim angles

Publikationstyp
Conference Paper
Publikationsdatum
2020-10
Sprache
English
Author
Wang, Jianhua 
Wan, Decheng 
Abdel-Maksoud, Moustafa orcid-logo
Institut
Fluiddynamik und Schiffstheorie M-8 
TORE-URI
http://hdl.handle.net/11420/7357
Volume
2020-October
Start Page
2338
End Page
2344
Citation
International Offshore and Polar Engineering Conference: 2338-2344 (2020-10)
Contribution to Conference
International Offshore and Polar Engineering Conference 2020 
Scopus ID
2-s2.0-85090898027
In 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.
Schlagworte
Computational fluid dynamics
Overset grid method
Ship hydrodynamics
Ship propulsion
Trim effect