Flow enhancement for underwater turbine generator

Details Flow enhancement for underwater turbine generator Flow enhancement for underwater turbine generator

F - Mech Eng,Light,Heat,Weapons

03

B

F03B 3/04 (2006.01) F03B 3/12 (2006.01)

Patent

CA 2549376

A flow enhancement improvement for an underwater turbine generator (10) is disclosed wherein a longitudinal hole (240) is disposed in the central area (26), typically a hub (20) of the generator (10), and a second, augmentor duct (41), preferably rigid, is disposed about the outer duct (40) or housing of the unit to create a slot (200) area. The slot (200) and hollow hub (20) create areas of smooth, laminar fluid flow. The leading edges of the hub (20) or central ring and the augmentor (41) and outer ducts (40) are elliptical to enhance the fluid dynamics of the structure.

L'invention porte sur l'amélioration de l'écoulement dans une turbogénératrice immergée. La turbogénératrice comporte une ouverture longitudinale dans la région centrale, formant en général le moyeu de la génératrice, et un second canal renforçateur d'écoulement, de préférence rigide, disposé autour du canal externe ou du boîtier de l'unité de manière à créer une fente. La fente et le moyeu creux créent des zones d'écoulement de fluide laminaires et régulières. Les bords avant ou l'anneau central du moyeu, ainsi que le renforçateur et les canaux externes, sont elliptiques de manière à améliorer la dynamique des fluides dans la structure.

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