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On the wake of a darrieus turbine
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Phillips, P. Robertson, G. Nowak, E. S. Base, T. E. |
| Copyright Year | 1981 |
| Description | The theory and experimental measurements on the aerodynamic decay of a wake from high performance vertical axis wind turbine are discussed. In the initial experimental study, the wake downstream of a model Darrieus rotor, 28 cm diameter and a height of 45.5 cm, was measured in a Boundary Layer Wind Tunnel. The wind turbine was run at the design tip speed ratio of 5.5. It was found that the wake decayed at a slower rate with distance downstream of the turbine, than a wake from a screen with similar troposkein shape and drag force characteristics as the Darrieus rotor. The initial wind tunnel results indicated that the vertical axis wind turbines should be spaced at least forty diameters apart to avoid mutual power depreciation greater than ten per cent. |
| File Size | 663535 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820015815 |
| Archival Resource Key | ark:/13960/t3kx07389 |
| Language | English |
| Publisher Date | 1981-05-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Aerodynamic Drag Torque Turbulent Wakes Vortices Laminar Wakes Wind Tunnel Tests Rotor Aerodynamics Wind Velocity Measurement Mathematical Models Wind Turbines Windpower Utilization Arrays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
