Fluid energy converting method and apparatus
A method and apparatus are disclosed for converting the kinetic energy of a moving fluid stream into useful work by means of a cascade of thin airfoils positioned therein. In one embodiment, the airfoils are provided with at least two degrees of freedom and adjacent airfoils are movable out of phase. The airfoils are subjected to the aerodynamically induced oscillations caused by the aeroelastic phenomenon known as flutter and the oscillatory movement is then harnessed to do useful work. In an alternate embodiment, a cascade of airfoils is mechanically oscillated within a moving fluid stream to increase the propulsion of the fluid. Where the fluid is a liquid, the cascade includes a plurality of hydrofoils.
- Assignee:
- IFI; EDB-82-064602
- Patent Number(s):
- US 4184805
- OSTI ID:
- 5749893
- Resource Relation:
- Patent File Date: Filed date 9 Mar 1978; Other Information: PAT-APPL-884816
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effect of steady aerodynamic loading on the flutter stability of turbomachinery blading
Performance of an angular flange aeroelastic wind energy converter
Related Subjects
17 WIND ENERGY
AIRFOILS
DESIGN
HYDROELECTRIC POWER
AERODYNAMICS
AIR
ENERGY CONVERSION
FLUID FLOW
OSCILLATIONS
WATER
CONVERSION
ELECTRIC POWER
ENERGY SOURCES
FLUID MECHANICS
FLUIDS
GASES
HYDROGEN COMPOUNDS
MECHANICS
OXYGEN COMPOUNDS
POWER
RENEWABLE ENERGY SOURCES
130300* - Hydro Energy- Plant Design & Operation
170603 - Wind Energy Engineering- Power-Conversion Systems