Supersonic shock wave compressor diffuser with circular arc chan

Details Supersonic shock wave compressor diffuser with circular arc chan Supersonic shock wave compressor diffuser with circular arc chan

1974-12-04

1977-03-15

Raduazo, Henry F.

Rotary kinetic fluid motors or pumps

Means, disposition or arrangement for causing supersonic...

415207, 415211, F04D 2100, F04D 2944

Patent

active

040121666

ABSTRACT:
A supersonic shock wave compressor diffuser forms a concentric annulus about a radial compressor having a central axis. Circular channels diverge with an increasing divergence angle as they extend along an arcuate longitudinal center line from an inner circumference very near the periphery of the compressor to the outer circumference of the diffuser. Shock waves may occur within the channels near the inner circumference of the diffuser or may occur within a vaneless diffusion space adjacent the periphery of the compressor and provide efficient energy conversion and reduce the velocity substantially below MACH 1 to further improve the efficiency of the subsonic diffusion downstream therefrom. A logarithmic spiral is approximated by a circular arc subtended by the channel longitudinal axes to permit recovery of angular momentum while the circular cross section of the channels permits recovery of swirl velocity energy. The required diameter of the outer circumference of the diffuser is reduced by using the shock waves to greatly reduce gas velocity within a short distance, by the curvature of the channels and by the angle of incidence of the longitudinal channel axes.

REFERENCES:
patent: 2596646 (1952-05-01), Bucki
patent: 2708883 (1955-05-01), Keller et al.
patent: 2819837 (1958-01-01), Loeb
patent: 3150823 (1964-09-01), Adams
patent: 3765792 (1973-10-01), Exley
patent: 3778186 (1973-12-01), Bandukwalla
patent: 3905721 (1975-09-01), Fitzpatrick
Publication: Centrifugal Pumps & Blowers by Austin H. Church Copyright 1944 pp. 19, 20, 118-128. 415-206.

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