摘要
由于减额输出区内任一点都可作为设计工况点,如何选取最优的设计工况点成为了目前低速机船舶设计的重要基础,这对提高经济性和改善船舶航行性能具有重要意义。本文对38800DWT散货船的主机进行了初步选型,分析了影响设计工况点选取的2个因素:船舶运行储备以及轴带发电机等负载,其中船舶运行储备引入转速系数的概念,研究了船舶储备对实际航行的影响,最终以燃油消耗率为优化目标确定设计工况点。归纳了设计工况点选取的方法,并将该设计方法运用到实船上,与实船主机参数吻合度较高,结果证明了本文所论述方法的正确性,为大型低速机船舶设计提供了理论指导。
Since any point in the layout area can be chosen as the design point of a condition,how to select the optimal design point becomes an important basis for current low-speed engine designs that are of great significance to improving the performance of ships for economic reasons and navigation.In this paper,the main engine of a 38800DWT bulk carrier is preliminarily selected,and two factors that affect the selection of the design point of the condition were analyzed,such as the ship operation margin and shaft generator load.The concept of the rotational speed coefficient was introduced for ship operation margin.The emphasis is on the influence of the ship operation margin on the actual navigation of the ship.Finally,the fuel consumption was used as the optimization object to determine the design point of the condition.The selection methods of the design point of the condition were determined,and the design method was applied to a real ship.The design agrees well with the parameters of the main engine.The result verifies the correctness of the method discussed in this paper,providing theoretical guidance for the design of large,low speed diesel ships.
作者
丁宇
王宸
随从标
任慧琳
DING Yu;WANG Chen;SUI Congbiao;REN Huilin(College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2020年第5期668-675,共8页
Journal of Harbin Engineering University
基金
国家国际科技合作专项(2014DFA71700)
高技术船舶科研计划——船用低速机工程(一期)研制。
