Hydrodynamic skin-friction reduction

Ships – Building – Antifriction surfaces

Patent

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Details

114289, 244130, 244199, 244207, B63B 138

Patent

active

050544128

ABSTRACT:
A process for reducing skin friction, inhibiting the effects of liquid turbulence, and decreasing heat transfer in a system involving flow of a liquid along a surface of a body includes applying a substantially integral sheet of a gas, e.g., air, immediately adjacent to the surface of the body, e.g., a marine vehicle, which has a longitudinally grooved surface in proximity with the liquid and with a surface material having high contact angle between the liquid and said wall to reduce interaction of the liquid, e.g., water, with the surface of the body, e.g., the hull of the marine vehicle.

REFERENCES:
patent: 1066732 (1913-07-01), Johnson
patent: 1725452 (1929-08-01), Harper
patent: 2145463 (1939-01-01), Spinanger
patent: 3016865 (1962-01-01), Eichenberger
patent: 3604661 (1971-09-01), Mayer
patent: 4693201 (1987-09-01), Williams et al.
patent: 4736912 (1988-04-01), Loebert
patent: 4863121 (1989-09-01), Savil
patent: 4932612 (1990-06-01), Blackwelder et al.
patent: 4986496 (1991-01-01), Marentic et al.

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