Heat dissipation system with surface located cavities for boundary layer disruption
AssigneeThe Government of the US, as represented by the Secretary of the Navy
InventorsYan R. Kucherov, Graham K. Hubler
Life of this patent
Estimating the term…
Abstract
A heat dissipation system that includes a structure having a surface with a cavity recessed on the surface. A wing or channel causes a vortex to occur in the cavity. Destabilizers, such as projections or recesses are disposed on the sidewall of the cavity to disrupt the local surface boundary layer that forms in the cavity. Alternatively, a plurality of freely moving bead elements are disposed in the cavity to disrupt the local surface boundary layer. A cover can be included that prevents the bead elements from exiting the cavity.
Claims26
A heat dissipation system for cooling a heated surface of a structure comprising:
- a structure having a surface over which a gas can flow;
- a cavity recessed from the surface of the structure, the cavity being bounded by a floor and an encircling sidewall extending from the floor to the surface, the encircling sidewall intersecting the surface at a perimeter edge;
- and
- a wing disposed at or adjacent to the perimeter edge of the cavity and projecting up and away from the surface of the structure, the wing being configured so as to cause a portion of a gas to enter and form a vortex in the cavity when the gas passes over the surface.
A method of cooling a structure, the method comprising:
- passing a gas cooler than the structure over a surface of the structure into a cavity recessed from the surface so that the gas forms a high pressure area at a wing, the cavity being bounded by a floor and an encircling sidewall extending from the floor to the surface, the encircling sidewall intersecting the surface at a perimeter edge and defining an opening, the wing being disposed at or adjacent to the perimeter edge of the cavity and projecting up and away from the surface of the structure, the high pressure area causing the gas to enter the cavity and form a vortex in the cavity, the gas absorbing heat from the sidewall and exiting the cavity through the opening.
Dependencies are inferred from the claim text.