Externally mounted vortex generators for flow duct passage

F - Mech Eng,Light,Heat,Weapons – 01 – D

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F01D 9/02 (2006.01)

Patent

CA 2562341

A high drag vortex generator for inhibiting the formation of boundary layer gas flow is mounted in a duct having a strong adverse pressure gradient with high speed gas flow over a primary aerodynamic. The vortex generator includes a mounting for supporting the high drag vortex generator at a spatial interval in the high speed gas flow above the primary aerodynamic surface. The high drag vortex generator is supported from the mounting and extends from the mounting in the high speed gas flow less than the full distance to the primary aerodynamic surface. Each high drag vortex generator includes first and second vanes. The first and second vanes have flow confining components at substantial right angles to one another. The vanes flow confining components deflect fluid flow towards and/or away from the primary aerodynamic surface inhibiting boundary layer formation downstream of the vortex generator.

L'invention concerne un générateur de vortex à résistance élevée destiné à inhiber la formation d'un flux gazeux de couche limite, et monté dans un conduit présentant un fort gradient de pression défavorable avec un débit de gaz à haute vitesse sur une surface aérodynamique primaire. Le générateur de vortex comprend un montage de support à haute résistance au niveau d'un intervalle spatial du débit gazeux à haute vitesse inférieur à la distance entière de la surface aérodynamique primaire. Chaque générateur de vortex à résistance élevée comprend une première et une seconde soupape. La première et la seconde soupape comprennent des composants de restriction de flux à des angles sensiblement droits l'un par rapport à l'autre. Les composants de restriction de flux des soupapes détectent le débit fluidique vers et/ou depuis la surface aérodynamique primaire inhibant la formation d'une couche limite en aval du générateur de vortex.

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