纵倾调整对三大主力船型航行性能的影响

Influence of Trim Optimization on Resistance Performance of Three Main Ship Types

以3艘典型海洋运输主力船型(13500TEU集装箱船、46000 t成品油轮和47500DWT散货船)为研究对象,分别讨论其在结构吃水、设计吃水、空载吃水3种装载工况下纵倾调整对航行所需主机功率的影响。采用试验的方法获取缩比模型阻力并换算至实船主机功率,比较同一载重不同纵倾下主机功率相对平浮增减值。结果表明:三大主流船型纵倾姿态调整对主机功率影响显著,不同载重工况下将船舶调整至最佳纵倾工况主机功率有3%~4%的降低空间。基于最小航行阻力原则在实际运营时可将船舶调整至对应纵倾姿态。

Taking three typical ocean freight main ship types(13500TEU container ship,46000 tons product tanker and 47500DWT bulk carrier)as the research object,the trimoptimizationof three loading conditions of structural draft,design draft and ballast draft are discussed,respectively.The test method is used to measure the resistance of the reduction model and convert it to the power of the main engineof theship.The relative increase and decrease of the power of the main engine under the same load and different trim state are compared.The research results show that,the trim adjustment of the three major ship types has a significant effect on the power of the main engine.Under different load conditions,the ship's power is adjusted to the optimal trimming conditions.The main engine power has a 3%~4%reduction space.During operation,the ship can be adjusted to the corresponding pitch state.