• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Offshore and Polar Engineering >A Vortex-Lattice Method for the Prediction of Unsteady Performance of Marine Propellers and Current Turbines
【24h】

A Vortex-Lattice Method for the Prediction of Unsteady Performance of Marine Propellers and Current Turbines

机译：涡旋格子法预测船舶螺旋桨和水轮机的非稳态性能

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

In this paper, the unsteady hydrodynamic analysis of marine propellers and horizontal-axis tidal current turbines is performed by using a vortex lattice method (VLM). A fully unsteady wake alignment algorithm is implemented into the VLM to satisfy the force-free condition on the propeller and turbine wake surfaces. It was found that the position of the trailing wake is very important in predicting the performance of propellers or turbines in steady or unsteady flow. The effects of a non-linear interaction between the inflow and the propeller/turbine blades have been taken into account by using a hybrid viscous/potential flow method, which couples the potential flow solver for the unsteady analysis of the propeller/turbine and a viscous flow solver for the prediction of the viscous flow field around them. The present method is then applied to predict unsteady hydrodynamic performance of a propeller and a horizontal-axis tidal current turbine. The predicted unsteady forces of a propeller subject to an inclined inflow are compared with those from experiments. The hydrodynamic performance of tidal turbine in yawed flow for various yaw angles is investigated. The numerical results are compared with existing experimental data.
机译：本文采用涡流格子法（VLM）对船用螺旋桨和水平轴潮流涡轮机进行了非定常流体力学分析。 VLM中采用了一种完全非稳态的尾流对准算法，以满足螺旋桨和涡轮尾流表面上的无力条件。发现尾随尾流的位置对于预测螺旋桨或涡轮在稳定或不稳定流量中的性能非常重要。通过使用混合粘性/势能流动方法考虑了进水口与螺旋桨/涡轮叶片之间非线性相互作用的影响，该方法将势能求解器与螺旋桨/涡轮机和粘性流体的非稳态分析相结合流动求解器，用于预测它们周围的粘性流场。然后将本方法应用于预测螺旋桨和水平轴潮流涡轮机的非稳态流体动力性能。将螺旋桨受到倾斜流入的预测的非稳态力与实验中的相比较。研究了在不同偏航角下潮汐涡轮机在偏航流中的水动力性能。将数值结果与现有实验数据进行比较。

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