...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Computers & Fluids >Analysis of a marine propeller operating in oblique flow. Part 2: Very high incidence angles
【24h】

Analysis of a marine propeller operating in oblique flow. Part 2: Very high incidence angles

机译：对倾斜流动的船用螺旋桨的分析。第2部分：非常高的入射角

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

The analysis of a propeller operating in off-design conditions is one of the most attractive and challenging topics in naval hydrodynamics, because of its close connections with different aspects of ship design and performances. For these reasons, wake dynamics and propeller loads are analyzed in the present paper by means of a numerical code based on the solution of the Reynolds averaged Navier-Stokes equations, whose capability to capture propeller hydrodynamics in these extreme conditions are also investigated. The test case considered is the CNR-INSEAN E779A propeller model, for which a detailed experimental database exists for axial flow conditions; propeller geometry and computational domain are discretized by means of an overlapping grid approach. A wide range of incidence angles (10-50°) at two different loading conditions are considered, in order to analyze the propeller performance during severe off-design conditions, similar to those experienced during very complicated maneuvering scenarios. Details of average and instantaneous loads are reported, for both the complete propeller and for a single blade. The present paper is an extension of the analysis of propeller performance in oblique flow, recently proposed in [1]; here, the focus is on propeller performance at very high angle of incidence. The k - e and a DES turbulence models have been exploited also, in order to provide a reliable verification of the numerical results in the absence of experimental data in these extreme operating conditions.
机译：由于螺旋桨与船舶设计和性能的不同方面有着密切的联系，因此对在非设计状态下工作的螺旋桨的分析是海军流体力学中最有吸引力和最具挑战性的主题之一。由于这些原因，本文基于雷诺平均Navier-Stokes方程的解，通过数字代码对尾流动力学和螺旋桨载荷进行了分析，并研究了其在这些极端条件下的捕获螺旋桨流体动力学的能力。考虑的测试案例是CNR-INSEAN E779A螺旋桨模型，针对该模型存在详细的轴向流量条件实验数据库;螺旋桨的几何形状和计算域通过重叠网格方法离散化。为了分析严重偏离设计条件下的螺旋桨性能，类似于在非常复杂的操纵情况下所经历的情况，考虑了两种不同载荷条件下的大入射角（10-50°）。报告了完整螺旋桨和单个桨叶的平均和瞬时载荷的详细信息。本文是对斜流中螺旋桨性能分析的扩展，最近在[1]中提出。这里，重点是在非常高的入射角下的螺旋桨性能。为了在这些极端工作条件下没有实验数据的情况下提供可靠的数值结果验证，还使用了k-e和DES湍流模型。

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