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目标优化算法在叶片参数化设计中的应用 被引量:3
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作者 刘正先 韩博 鲁业明 《天津大学学报(自然科学与工程技术版)》 EI CSCD 北大核心 2017年第1期19-27,共9页
针对离心叶轮优化设计中调控参数不明确、难以直接获得最优设计结果的状况,将单层神经网络算法应用于离心叶轮优化,并建立了分层优化的算法.根据设计目标将离心叶轮叶片优化设计分为压比和效率两个阶段,随后分析确定了各目标阶段的有效... 针对离心叶轮优化设计中调控参数不明确、难以直接获得最优设计结果的状况,将单层神经网络算法应用于离心叶轮优化,并建立了分层优化的算法.根据设计目标将离心叶轮叶片优化设计分为压比和效率两个阶段,随后分析确定了各目标阶段的有效控制变量参数.最后以初始叶轮为基础,将该目标优化算法应用于某工业叶轮的改型实例设计,结果表明:压比目标算法使叶轮达到压比值要求;一次效率目标算法实现了对叶轮设计点流量的调控;二次效率目标算法达到了对叶轮非设计工况性能的提升. 展开更多
关键词 离心叶轮 目标算法 单层神经网络 分级优化设计 数值计算
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Energy Efficiency Operating Indicator Forecasting and Speed Design Optimization for Polar Ice Class Merchant Vessels
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作者 LU Yu LI Chen−ran +3 位作者 ZHU Xiang−hang LI Shi−an GU Zhu−hao LIU She−wen 《船舶力学》 北大核心 2025年第6期901-911,共11页
In order to accurately forecast the main engine fuel consumption and reduce the Energy Efficiency Operational Indicator(EEOI)of merchant ships in polar ice areas,the energy transfer relationship between ship-machine-p... In order to accurately forecast the main engine fuel consumption and reduce the Energy Efficiency Operational Indicator(EEOI)of merchant ships in polar ice areas,the energy transfer relationship between ship-machine-propeller is studied by analyzing the complex force situation during ship navigation and building a MATLAB/Simulink simulation platform based on multi-environmental resistance,propeller efficiency,main engine power,fuel consumption,fuel consumption rate and EEOI calculation module.Considering the environmental factors of wind,wave and ice,the route is divided into sections,the calculation of main engine power,main engine fuel consumption and EEOI for each section is completed,and the speed design is optimized based on the simulation model for each section.Under the requirements of the voyage plan,the optimization results show that the energy efficiency operation index of the whole route is reduced by 3.114%and the fuel consumption is reduced by 9.17 t. 展开更多
关键词 Energy Efficiency Operational Indicator ice-class ships segment division design optimization
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