摘 要： 【目的】针对内河船舶在航行时存在顺水、逆水和急流等多种工况，传统的内河船舶船-机-桨匹配设计方法仅对船舶在逆水上行时进行匹配设计；而在顺水下行工况时，船舶推进效率较低、主机利用率较低，从而造成油耗成本高和经济性较差等问题；进行多工况的内河船舶船机桨匹配优化设计方法的研究。【方法】首先，在不同工况下对内河船舶推进系统各参数进行设计，将结果进行对比得出各设计参数对整体推进系统的影响。然后，对船舶推进系统的设计过程进行分析，以航行成本和推进系统效率为目标函数；螺旋桨设计参数、主机功率、船舶上水航速和下水航速为变量；建立数学模型。最后，应用NSGA-Ⅱ算法对其进行多目标优化，得到兼顾经济性和推进效率的船舶主机功率和推进系统设计参数。【结果】对比传统的船机桨匹配方法，研究结果显示，使用该方法得到的设计参数能更好地适配内河的通航环境，使船舶的经济性更高。【结论】研究成果既可以为内河船舶推进系统的选型与匹配优化提供设计工具，也可以为船舶实际运行提供理论依据。
[Objective] For inland ships in sailing, there are multiple working profiles such as downstream upstream and jet stream, the traditional ship-engine-propeller matching method can only ensure that the ship meets the design requirements when it travels in upstream. In downstream condition, the ship propulsion’s efficiency is low and the main engine utilization rate is low, resulting in high fuel consumption costs and poor economy; Research on the optimal design of propulsion system for inland ships considering multiple profiles is carried out. [Methods] First, design the parameters of inland ship’s propulsion system under different working profiles, and compare the results to get the influence of each design parameter on the overall propulsion system. Then, analyze the design process of ship propulsion system. Establish a mathematical model with navigation cost and propulsion system efficiency as the objective function, and the design parameters of the propeller, the power of the main engine, the ship's launching speed and launching speed as variables. Finally, obtain design parameters of both the economy and promote efficiency with NSGA-II algorithm. [Results] Compared with the traditional method, the results show that the design parameters obtained by using this method can better adapt to the navigable environment of inland ships, making the inland ship more economical. [Conclusion] The research results can not only provide design tools for the selection of ship propulsion system, but also provide theoretical basis for its practical application.