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Author: Cogan S. Semler Publisher: ISBN: Category : Hydrodynamics Languages : en Pages : 47
Book Description
The objective of this project was to construct and test a device that can transform fluid flow into the continuous oscillatory linear motion of a hydro/airfoil. This device may be used to generate power from a renewable energy source such as tidal flow or wind power. The device was constructed in the NPS machine shop. It consisted of a flat plate that is mounted on two rail guides such that it can execute a linear back-and-forth motion. The blade oscillation is flow induced due to the lift and the moment generated on the flat plate in such a way that the plate reverses direction at the stroke endpoints without active control. Tests in two water channels and one towing tank showed that flow-induced blade oscillation could be achieved for certain combinations of flow speed, blade size and pitch axis location. It is concluded that additional testing is warranted to further develop and gain understanding of this technology and its possible application to renewable power generation.
Author: Cogan S. Semler Publisher: ISBN: Category : Hydrodynamics Languages : en Pages : 47
Book Description
The objective of this project was to construct and test a device that can transform fluid flow into the continuous oscillatory linear motion of a hydro/airfoil. This device may be used to generate power from a renewable energy source such as tidal flow or wind power. The device was constructed in the NPS machine shop. It consisted of a flat plate that is mounted on two rail guides such that it can execute a linear back-and-forth motion. The blade oscillation is flow induced due to the lift and the moment generated on the flat plate in such a way that the plate reverses direction at the stroke endpoints without active control. Tests in two water channels and one towing tank showed that flow-induced blade oscillation could be achieved for certain combinations of flow speed, blade size and pitch axis location. It is concluded that additional testing is warranted to further develop and gain understanding of this technology and its possible application to renewable power generation.
Author: Scott T. Davids Publisher: ISBN: 9781423543268 Category : Languages : en Pages : 106
Book Description
The phenomenon of flutter is well known to aircraft designers. A fluttering wing on an aircraft absorbs a significant amount of energy from the air-stream. In this study, computational and experimental methods are used to investigate the possibility of extracting power from a flow using an oscillating airfoil. A numerical analysis is conducted using an unsteady panel code based on potential flow theory. Through the numerical study the combination of parameters is determined that results in the optimum performance of an oscillating-wing power generator. An experimental oscillating-wing power generator is described and tested in a water tunnel. Power and efficiency measurements from the generator are compared to the numerical results. Similar trends between the results suggest that an oscillating-wing power generator is capable of performance comparable to windmills and is a potential source of alternative power.
Author: Cogan S. Semler
Author: Cogan S. Semler
Author: Arthur Edward Fanning
Author: Charles C. Dailey
Author: Donald Paul Gaver
Author: Jörg Seume
Author: Scott T. Davids
Author: Islam Ramadan
Author: Lakshmendra Shanker Saxena
Author: Meng Wang
Author: Farid Moslehi