Device for generating vortices in channels or pipes
AssigneeUniversidad de Sevilla
InventorsJavier DAVILA MARTIN, Alonso FERNANDEZ MORALES
Life of this patent
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Abstract
A vortex generator device in channels or ducts that makes it possible to take advantage of the wingtip vortex that is formed in the aerodynamic profiles as a consequence of having a finite wingspan. These aerodynamic profiles have one or two marginal edges from which the wingtip vortex emerges, causing the appearance of an oscillatory movement that subjects the particles that travel with the current to an ascending-descending cycle, and has the fundamental advantage that transverse speeds are produced to the main current, with hardly any pressure drops.
Claims7
A vortex generator device in channels or ducts comprising:
- at least one channel or conduit through which a fluid circulates comprising a kinematic viscosity and an average speed of the fluid in the channel or conduit, where the channel or conduit comprises at least two walls and a bottom,
- at least one fin or aerodynamic profile where the fluid impacts, which in turn comprises a face on which overpressures are produced due to the incidence of the fluid, or high-pressure face, and a face on which there are depressions with respect to the overpressures in the high-pressure face, or low-pressure face, and a maximum chord,
- wherein the at least one fin or aerodynamic profile is fixed to one of the at least two walls or to the bottom of the channel or duct by means of an edge opposite a marginal edge of the fin or aerodynamic profile, or is fixed to a first solid structure, the solid structure comprising:
- an angle of attack of said fin or aerodynamic profile between −20° and 20°;
- a ratio of a sum of the surface of the high-pressure face and the low-pressure face of the fin or aerodynamic profile over the square of its maximum chord is less than 8, and
- a distance from the marginal edge of the fin or aerodynamic profile to one of the at least two walls or to the bottom of the channel or duct, whichever is the minimum, is greater than a result of multiplying 10000 by a kinematic viscosity of the fluid and divided by an average speed of the fluid in the channel or conduit.
Dependencies are inferred from the claim text.