大型客船吊舱推进诱导的脉动压力预报

Prediction of Pressure Fluctuations on Cruise Ship Hull Induced by Podded Propulsors

采用数值计算方法对大型客船船体阻力、吊舱推进器敞水性能以及邮轮自航性能进行数值模拟,预报推力减额和伴流分数大小,以及吊舱推进器附近船底不同位置处的压力脉动特性,分析航速以及推进器横向位置对船底压力脉动特性的影响,为大型邮轮高效低噪声推进系统的设计开发提供参考。

Numerical simulations were carried out respectively upon hull resistance,podded propulsor open water performance and self-propulsion performance of cruise ship.The thrust deduction fraction and wake fraction as well as the pressure fluctuation on the surface of the hull bottom were numerically predicted.The influence of the podded propulsor transversal installation position and ship speed on the hull bottom surface pressure fluctuation were discussed.This work provided reference for the high performance and low noise design of cruise ship propulsion system.