船舶螺旋桨尾流动态结构分析
Analysis on the Dynamic Structure of Ship Propeller Wake
  
DOI:
中文关键词:  螺旋桨  尾涡结构  数值模拟  环量  梢涡
英文关键词:propeller  structure of wake  numerical simulation  circulation  tip vortex
基金项目:
作者单位
韩健1,陈庆任2,李广年3 1.上海振华重工(集团)股份有限公司 2 中国船级社武汉规范研究所.3 集美大学 
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中文摘要:
      为了探索螺旋桨尾流的细节结构,以标准桨DTMB 4119桨为研究对象,利用Fluent软件开展了均匀来流下螺旋桨尾流场的数值模拟,分析了尾流场中轴向、径向、周向速度、涡量以及螺旋桨附着涡的总环量分布特征;研究了尾流结构及其演化规律,获得诸如Rankine模式梢涡的结构、尾涡片的分层特征、尾流收缩等典型的尾涡结构特征。计算结果与试验测试结果取得了良好的吻合。
英文摘要:
      The complex flow around the DTMB- 4119 propeller in uniform inflow is investigated using the Fluent software in order to explore the details of the structure of wake. The distribution characteristics of radial velocity, axial velocity, circumferential velocity, vorticity and the propeller total attachment vortex circulation are analyzed, before studying the characteristics of structure of trailing vortex and its evolution laws in wake. The typical characteristics of propeller wake are obtained, such as “tip vortex in Rankine model”, “two layer of vortex sheets”, and “slipstream contraction”. Compared with experimental results, the numerical results show a good agreement.
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