剪切流对潮流能水平轴水轮机水动力性能的影响

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英文篇名：Influence of the Shear Flow on the Hydrodynamic Performance of the Horizontal Axis Tidal Current Turbine 作者：荆丰梅 ; 陈鹏 ; 马伟佳 英文作者：JING Fengmei;CHEN Peng;MA Weijia;School of Mechanical Engineering,Beijing Institute of Petrochemical Technology;College of Shipbuilding Engineering,Harbin Engineering University;Industry Development and Promotion Center,Ministry of Industry and Information Technology of the People's Republic of China; 关键词：潮流能 ; 水平轴水轮机 ; 剪切流 ; 水动力特性 英文关键词：tidal current;;horizontal axis turbine;;shear flow;;hydrodynamic characteristics 中文刊名：船舶工程 英文刊名：Ship Engineering 机构：北京石油化工学院机械工程学院;哈尔滨工程大学船舶工程学院;工业和信息化部产业发展促进中心; 出版日期：2019-06-25 出版单位：船舶工程 年：2019 期：06 基金：国家自然科学基金资助(51779063;U1706227) 语种：中文; 页：11-15+57 页数：6 CN：31-1281/U ISSN：1000-6982 分类号：TV136.1;P743

摘要

为研究剪切流下潮流能水平轴水轮机水动力载荷的特性,基于计算流体力学(CFD)方法建立剪切流模型,计算水平轴水轮机在剪切流下的水动力载荷,并分析得出剪切流对水动力载荷的影响规律。结果表明:在剪切流情况下,水动力载荷系数时历曲线发生明显波动,除了弯矩系数的波动频率与叶轮旋转频率一致外,其他系数的波动频率均为叶轮旋转频率的2倍,且剪切流越大,水动力载荷系数的波动幅值就越大;随着速比的增大,弯矩系数的波动幅值逐渐增大,而侧向力系数波动幅值先增大再减小,在最优速比左右达到最大。研究成果可为潮流能水平轴水轮机的结构设计和性能优化提供参考。
        Based on the CFD method, the hydrodynamic performance of the horizontal axis tidal current turbine under the shear flow is studied. The numerical model under the shear flow is set up, and hydrodynamic loads under shear flow are obtained, and the influence of shear rate on the hydrodynamic load is analyzed. The result shows that the time-varying curve of the hydrodynamic load coefficient under the shear flow fluctuate obviously, and the fluctuation frequency of the bending moment coefficient is the same with the rotation frequency of the turbine, but the fluctuation frequency of other coefficients is the double of that of the turbine. The fluctuation amplitude of the hydrodynamic coefficient is increasing with the shear rate, while the fluctuation amplitude of the bending moment coefficient is increasing with the speed ratio, and the fluctuation amplitude of lateral force coefficient is increasing firstly and then decrease with the speed ratio, which reach to the maximum value at the optimal speed ratio. The research result can provide reference for the structure design and performance optimization of the horizontal axis tidal current turbine.

引文

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