水资源与水工程学报2016，Vol.27Issue(1)：158-162,5.DOI:10.11705/j.issn.1672-643X.2016.01.28
襟翼长度对翼型水动特性影响
Effect of flap length on water dynamic characteristics of airfoil
摘要
Abstract
Aimed at the problem of hydrodynamic for tidal current turbine,the paper used CFD numerical simulation method and took NACA0018 as reference airfoil to analyzed the change of flow field of original and wing airfoil,and the impact of flap length on dynamic characteristics and surface static pressure coefficient distribution of airfoil.Numerical results show that the flap airfoil stall angle of attack can be delayed,and after reaching the lift coefficient,the original wing stall angle corresponding to the angle of attack increased;the influence of flap on airfoil flap pressure distribution in a small angle of attack is less.When flap length is 0.3c (c the airfoil chord),the change of pressure coefficient is most evident;when the angle of attack approaches the smallest and flap length is 0.2c,the airfoil optimal hydrodynamic characteristics is optimal;after reaching the stall angle of attack,the influence of flap on wing flow field and static pressure coefficient distribution is greater.The distribution of pressure area range of airfoil suction surface is uniform.When the length is 0.2c the hydrodynamic characteristics is optimal.The lift coefficient has greater increase than that of original airfoil,but the resistance coefficient changes little.关键词
翼型/襟翼/襟翼长度/水动特性/潮流能水轮机Key words
airfoil/flap/flap length/hydrodynamic characteristics/tidal current turbine分类
建筑与水利引用本文复制引用
李润杰,李春,李倩倩,叶舟..襟翼长度对翼型水动特性影响[J].水资源与水工程学报,2016,27(1):158-162,5.基金项目
国家自然科学基金项目(E51176129) （E51176129）
上海市育委员会科研创新(重点)项目(13ZZ120) （重点）
教育部高等学校博士学科点专项科研基金(博导类)项目(201231200110008) （博导类）
