Accession Number : ADD018608

Title :   Supersonic Fluid Dispersing Injector

Descriptive Note : Patent, Filed 30 Nov 94, patented 17 Jun 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Yanta, William J ; Williams, Christopher K

Report Date : 17 Jun 1997

Pagination or Media Count : 5

Abstract : A fluid disperser is provided for dispersing a first fluid into a moving stream of a second fluid. After the first fluid is pressurized to at least twice the pressure of the second fluid the first fluid is passed through a throat that increases the flow velocity of the first fluid to supersonic. A fluidic oscillator, coupled to the output of the throat has a central, axis of symmetry, a first end by which the first fluid enters the oscillator and a second end by which the first fluid exits the oscillator. The oscillator includes two opposing walls that diverge symmetrically about the central axis from the first to the second end at an angle of divergence relative to the central axis that causes the first fluid entering the first end to attach to either of the two opposing walls and continue therealong to the second end. The oscillator further includes feedback loops for feeding back a portion of the first fluid exiting the second end that is attached to either of the two opposing walls to the first end so that the first fluid will detach from one of the two opposing walls and attach to the other of the two opposing walls. First and second diverging nozzles, coupled to the second end of the oscillator, direct a remainder of the first fluid exiting the second end into the second fluid, specifically, each of the first and second diverging nozzles diverge symmetrically about and away from the central axis at approximately the angie of divergence. The first and second diverging nozzles terminate in a spaced apart relationship in the second fluid.

Descriptors :   *FUEL INJECTORS, *PATENTS, OSCILLATORS, DISPERSING, SYMMETRY, WALLS, SUPERSONIC FLOW, STREAMS, FLUIDICS, FUEL NOZZLES

Subject Categories : Reciprocating and Rotating Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE