초록 ▼

One or more channels whose edges generate streamwise vortices from heights coincidental with a local flow-control surface into the channels are used to maintain attached flow of a fluid medium flowing therepast, even in areas of severe regional adverse pressure gradients. The channels are generally

One or more channels whose edges generate streamwise vortices from heights coincidental with a local flow-control surface into the channels are used to maintain attached flow of a fluid medium flowing therepast, even in areas of severe regional adverse pressure gradients. The channels are generally triangular in shape with the apex forwardmost in the flow. The channels work very effectively when nested in series and are most effective when the channels extend to the trailing edge of a flow-control surface.

대표청구항 ▼

Means to maintain flow of a flowing medium attached to the exterior of a flow control member having a flow control surface, said means including: a first generally triangularly shaped channel submerged in the flow control surface, said triangularly shaped channel having: an apex portion facing the f

Means to maintain flow of a flowing medium attached to the exterior of a flow control member having a flow control surface, said means including: a first generally triangularly shaped channel submerged in the flow control surface, said triangularly shaped channel having: an apex portion facing the flow of the flowing medium; an end portion positioned downstream in the flow of flowing medium from said apex portion; a floor surface extending from the flow control surface at said apex portion to said end portion; a first sidewall extending between the flow control surface and said floor surface and extending between said apex portion and said end portion, said first sidewall forming a first sidewall edge between said first sidewall and the flow control surface, said first sidewall edge having a forward portion, a rearward portion, and a central portion, said first sidewall central portion being positioned out of alignment with the flow of the flowing medium; and a second sidewall extending between the flow control surface and said floor surface and extending between said apex portion and said end portion, said second sidewall forming a second sidewall edge between said second sidewall and the flow control surface, said second sidewall edge having a forward portion, a rearward portion, and a central portion, said second sidewall central portion being positioned out of alignment with the flow of the flowing medium, whereby first and second counterrotating vortices form over said first and second sidewall edges in said first channel which thin the boundry layer of the flow of flowing medium at the adjacent flow control surface and provide turbulent mixing within said first channel so that the flow of flowing medium remains attached to the flow control surface and said floor surface.