Abstract
To estimate the blade performance of a Darrieus-type cross-flow water turbine, differences between the characteristics of a Darrieus blade which moves along a circular path, and that of the blade at rest in a uniform steady flow are examined quantitatively by use of experimental data for three types of blades with different cambers or chord lengths from each other. It is found that a unique stall character strongly effects the drag force acting on the Darrieus blade. A model of the changing pattern of the drag coefficient by a dynamic stall is proposed from the results of measurement for estimating the blade characteristics. As the results, the blade characteristics and performances of the Darrieus-type runner are predicted well by the use of aerofoil data in a uniform steady flow and taking into account the effect of a circular motion, and the dynamic effect of the unsteady flow around the Darrieus blade.
| Original language | English |
|---|---|
| Title of host publication | Memoirs of the Kyushu University, Faculty of Engineering |
| Publisher | Publ by Kyushu Univ |
| Pages | 131-144 |
| Number of pages | 14 |
| Volume | 52 |
| Edition | 2 |
| Publication status | Published - Jun 1992 |
All Science Journal Classification (ASJC) codes
- Engineering(all)