Abstract:
Objective During ship turning maneuvers, the loads on the propulsion shafting induced by the propeller have a direct influence on its service life and the vessel's operational safety. Given the complexity of actual marine environments, it is imperative to enhance the computational accuracy of the shafting's dynamic response.
Method This research utilizes a combined methodology of an improved 4-DOF discrete MMG model and Computational Fluid Dynamics (CFD) to investigate the response characteristics of the propulsion shafting during turns.
Results The simulation results indicate that the turning radius decreases as the rudder angle increases. Moreover, distinct variations in the lateral and axial thrust of the propeller occur with changes in both rudder angle and rotational speed. Under the combined action of propeller hydrodynamic forces and centrifugal forces during turning, the load on the shafting system exhibits an asymmetric distribution.
Conclusion The outcomes of this study can serve as a valuable reference for the design optimization and maneupling control improvement of large-scale ship propulsion shafting systems.
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