Session: 08-02-01 Maneuvering

Paper Number: 79453

79453 - CFD Prediction and Validation for the Maneuverability of a Damaged Ship 

Abstract: The present study carried out direct simulations of turning circle and zigzag simulations of a surface combatant ONR tumblehome model with a damaged bow compartment, using an in-house viscous RANS code. The overset grid approach was applied and the 6DOF equation of rigid body was solved to predict the motions of free-running ship in self-propulsion and maneuver processes. Firstly, the self-propulsion simulations of intact and damaged conditions were conducted, and the propeller revolution rate was validated by comparing with the corresponding experiment data. Afterwards, the turning and zigzag tests of damaged ship with same Froude number were simulated numerically, and the results of maneuvering criteria were compared with the available experimental data, which showed good matches with each other. This demonstrated that the direct simulations for free-running ship maneuver utilizing present numerical methods are feasible and reliable. The maneuvering criteria of intact and damaged conditions were compared with each other, which aimed to evaluate the effects of damaged compartment on the ship maneuverability. Meantime, the hydrodynamic loads acting on damaged compartment were acquired, which were used to study the influence of flow communication between ship and environment on the ship maneuverability.

Key words: ONRT; CFD; Damaged ship; Maneuverability; Turning circle; Zigzag; Validation 

 

Presenting Author: Kai Dong School of Naval Architecture & Ocean Engineering, Huazhong University of Science and Technology

Authors:

Kai Dong School of Naval Architecture & Ocean Engineering, Huazhong University of Science and Technology
Liwei Liu School of Naval Architecture & Ocean Engineering, Huazhong University of Science and Technology
Xianzhou Wang School of Naval Architecture & Ocean Engineering, Huazhong University of Science and Technology
Rui Luo China Ship Design and Development Center