Effects of hub-to-tip ratio and tip clearance on hysteretic characteristics of wells turbine for wave power conversion

被引：0

作者：

Tae-Ho Kim

Yoichi Kinoue

Toshiaki Setoguchi

Kenji Kaneko

机构：

[1] Saga University,Department of Mechanical Engineering

来源：

Journal of Thermal Science | 2002年 / 11卷

关键词：

Turbomachinery; Wells turbine; natural energy; ocean wave energy; wave power conversion;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A Wells turbine for wave power conversion has hysteretic characteristics in a reciprocating flow. The hysteretic loop is opposite to the well-known dynamic stall of an airfoil. In this paper, the mechanism of the hysteretic behavior was elucidated by an unsteady 3-dimensional Navier-Stokes numerical simulation. It was found that the hysteretic behavior was associated with a streamwise vortical flow appearing near the blade suction surface. The effects of hub-to-tip ratio and tip clearance on the hysteretic characteristics of the Wells turbine have also been discussed in this paper.

引用

页码：207 / 213

页数：6