Effects of Hub-To-Tip Ratio and Tip Clearance on Hysteretic Characteristics of Wells Turbine for Wave Power Conversion

被引：14

作者：

Kim, Tae-Ho ^{[1
]}

Kinoue, Yoichi ^{[1
]}

Setoguchi, Toshiaki ^{[1
]}

Kaneko, Kenji ^{[1
]}

机构：

[1] Saga Univ, Dept Mech Engn, Saga 8408502, Japan

来源：

JOURNAL OF THERMAL SCIENCE | 2002年 / 11卷 / 03期

关键词：

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

D O I：

10.1007/s11630-002-0056-7

中图分类号：

O414.1 [热力学];

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：7