哈尔滨工程大学学报Issue(3)：307-311,5.DOI:10.3969/j.issn.1006-7043.201403015
潮流能水平轴叶轮纵摇运动水动力分析
The pitch hydrodynamic analysis of tidal current energy horizontal axis impeller
摘要
Abstract
Under the condition of actual sea state, hydrodynamic characteristic of floating horizontal axis impeller is related to wave characteristics and floating carrier wave motion response. This paper uses slipping mesh and dynam⁃ic mesh to analyze the hydrodynamic characteristic in uniform unbounded stream when the rotating impeller is forced to pitch, and studies the influence of different pitch frequencies, pitch amplitudes and tip speed ratios on turbine hydrodynamics. Pitch damping coefficient can be got by hydrodynamic time⁃history curve of pitching impeller. The results showed that the impeller axial load and energy utilization ratio will make a fluctuation in pitching and the wave amplitude of momentary value increases with the increasing of pitch frequency, pitch amplitude, and tip speed ratio. The blade surface pressure distribution changes when the impeller is pitching, and the larger the pitch fre⁃quency, pitch amplitude and tip speed ratio, the more obvious the changes. The frequency and amplitude of the pitch have little impact on damping coefficient, but this coefficient is positively proportional to the rotational speed of the impeller.关键词
潮流能/水平轴叶轮/强迫纵摇/水动力载荷/阻尼系数/计算流体力学Key words
tidal current energy/horizontal axis impeller/forced pitching/hydrodynamic load/damping coeffi-cient/computational fluid dynamics (CFD)分类
能源科技引用本文复制引用
张亮,王树齐,马勇,张学伟,国威..潮流能水平轴叶轮纵摇运动水动力分析[J].哈尔滨工程大学学报,2015,(3):307-311,5.基金项目
国家自然科学基金资助项目（51309069，51309068，51106034）；海洋能专项基金资助项目（ GHME2010GC02）；哈尔滨市科技创新人才研究专项资金资助项目（ RC2014QN001008，2012RFQXG086）；中国博士后科学基金面上资助项目（2014M561334）；黑龙江省博士后基金资助项目（ LBH-Z14060）． （）
