四桨推进大型船舶的船机桨匹配研究的中期报告摘要：本文旨在阐述四桨推进大型船舶船机桨匹配的中期研究进展。首先介绍了四桨推进系统的基本原理和优势，重点阐述了四桨推进系统与传统双桨推进系统相比的优点。其次，针对四桨推进系统的特点，分析了船机桨的选型和匹配问题，并提出了一种基于模拟优化算法的船机桨匹配方法。最后，我们在某大型货轮上进行了实地测试，结果表明，所提出的方法能够有效地优化船机桨的匹配，提高船舶的推进效率和燃油利用率。关键词：四桨推进，船机桨匹配，模拟优化算法，船舶推进效率，燃油利用率。Abstract:Thispaperaimstopresentthemid-termresearchprogressonthematchingofshipengineandpropellerforquad-propulsionlargeships.Firstly,thebasicprincipleandadvantagesofthefour-propulsionsystemareintroduced,andtheadvantagesofthefour-propulsionsystemcomparedwiththetraditionaltwin-propulsionsystemareemphasized.Secondly,accordingtothecharacteristicsofthefour-propulsionsystem,theproblemofselectingandmatchingofshipengineandpropellerisanalyzed,andasimulationoptimizationalgorithmbasedmatchingmethodofshipengineandpropellerisproposed.Finally,weconductedfieldtestsonalargecargoship,andtheresultsshowedthattheproposedmethodcaneffectivelyoptimizethematchingofshipengineandpropeller,improvethepropulsionefficiencyandfuelutilizationrateoftheship.Keywords:four-propulsion,shipengineandpropellermatching,simulationoptimizationalgorithm,shippropulsionefficiency,fuelutilizationrate.