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混流水轮机转轮叶片最优化设计
引用本文:陈乃祥,林汝长,罗兴琦.混流水轮机转轮叶片最优化设计[J].清华大学学报(自然科学版),1997(3).
作者姓名:陈乃祥  林汝长  罗兴琦
作者单位:清华大学水利水电工程系
基金项目:国家自然科学基金,三峡基金资助项目
摘    要:用计及叶厚、有限叶片数影响及来流有旋的全三维设计理论及最优化技术中的单纯型法寻优,用SWIFT法将反映包角、叶片流速及流动分离等约束的等式和不等式约束条件计入目标函数,以Vθr的分布为优化参数进行混流式水轮机转轮最优化设计的初步尝试。给出了理论、方法及算例,其中包括分别按汽蚀性能优化和按损失最小优化及多目标优化的结果。其中损失计入叶片正、背面及上冠下环的沿程损失和叶片进口撞击损失、出口扩散损失。

关 键 词:全三维  最优化  水轮机转轮  有旋流动

Study on optimum design of mixed flow turbine runner blade
Chen Naixiang,Lin Ruchang,Luo Xingqi.Study on optimum design of mixed flow turbine runner blade[J].Journal of Tsinghua University(Science and Technology),1997(3).
Authors:Chen Naixiang  Lin Ruchang  Luo Xingqi
Institution:Chen Naixiang,Lin Ruchang,Luo Xingqi Department of Hydraulic and Hydropower Engneering,Tsinghua University,Beijing 100084
Abstract:The paper studes optimum design of mixed flow turbine runner by SWIFT method and full 3 D mathematical model counted effect of thickness and limit nomber of bladies.The target function accounted restrain factor of equvalence and unequivalence of wrap angle of blade, surface velocity of blade and flow separation, and the distribution of Vor is taken as optimized parameters.The theory, method and example are given in the paper, it is includded that least cavitation factor, least lose which accouted surface lose of blade, crown and band of runner, and lose of outlet diffuse and inlet strike, and least sum of the two factors(cavitation factor and energe lose).
Keywords:turbine runner  optimum design  mixed flow turbine  target function
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