Research on Predicting Dynamic Rudder Torque of Fully Rotating Pod Thruster
The pod thruster integrates propelling and maneuvering functions,achieving 360° vector thrust on the horizontal plane.Based on viscous flow theory together with dual-slip mesh technology,a numerical prediction method is established for dynamic steering torque during the full rotation with the rotating and helical motion modes of the pod thruster specified.Distribution patterns of the steering torque are analyzed under different conditions.The research indicates that,compared to the inflow velocity,the steering velocity has a minor impact on the steering torque.When J=0.5,the maximum value of the steering torque appears near 260°,reaching its coefficient of 2.384 × 10-3.The steering torque has two response frequencies,namely shaft frequency 4.17Hz and blade frequency 20.8Hz.The findings of the study hold significance in guiding the design of the pod thruster's steering system.
pod thrusterfull rotationhydrodynamic forcesnumerical predictiondynamic rudder torque
NETL
NSTL
万方数据
