...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Semi-empirical wake structure model of rotors using joint axial momentum theory and DES-SA method
【24h】

Semi-empirical wake structure model of rotors using joint axial momentum theory and DES-SA method

机译：基于联合轴向动量理论和DES-SA方法的转子半经验尾迹结构模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

CFD simulation with DES-SA turbulence model are conducted to investigate the wake velocity characteristics. The turbine wake velocity distribution of axial, tangential and radial component is analysed by comparing numerical results with previous the experimental and theoretical results. The axial velocity component is continuously recovered along the axial direction. Based on the position of minimum axial velocity, turbine wake can be divided into two zones: zone of flow establishment and zone of established flow. In the zone of flow establishment, two-dipped velocity valleys of the axial velocity distribution appear along the radial direction. These two valleys are combined to one valley at the rotation axis in the zone of established flow. The tangential velocity component is the second largest and the radial velocity component accounts for only a small proportion. Both of tangential and radial velocity decreases along the axial direction. Two velocity peaks of both tangential and radial velocity appear along the radial direction. Several empirical equations of turbine wake are proposed to describe the velocity distribution.
机译：用DES-SA湍流模型进行了CFD仿真，以研究尾流速度特性。通过将数值结果与先前的实验和理论结果进行比较，分析了涡轮机轴向，切向和径向分量的尾流速度分布。轴向速度分量沿轴向连续恢复。根据最小轴向速度的位置，涡轮机的尾流可分为两个区域：流动建立区域和已建立流动区域。在流动建立区域中，轴向速度分布的两个浸入速度谷沿径向方向出现。这两个谷在已建立的流动区域中在旋转轴处合并为一个谷。切向速度分量为第二大，而径向速度分量仅占很小的比例。切线速度和径向速度均沿轴向方向减小。沿径向出现两个切线速度和径向速度的速度峰值。提出了几种涡轮尾流经验方程式来描述速度分布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号