Surge enhanced cavitating jet

Fluid sprinkling – spraying – and diffusing – Rigid fluid confining distributor – Fluidic oscillator

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Details

239499, B05B 100

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active

051255820

ABSTRACT:
A surge enhanced cavitating jet for a fluid jetting system. The cavitating jet includes a nozzle portion having a conical throat followed by a fluid separating section. Immediately downstream from the separating section is a substantially cylindrical surge section. The length and inside diameter of the surge section are sized such that a minimum annular area is defined between the inside diameter of the surge section and the outside of the fluid stream as the fluid discharges from the cavitating jet such that cavitation is contained in the surge volume. The fluid stream does not impinge the inside diameter of the cavitating jet. A jetting system including a pump and valve is also disclosed.

REFERENCES:
patent: 3528704 (1970-09-01), Johnson, Jr.
patent: 3713699 (1973-01-01), Johnson, Jr.
patent: 3807632 (1974-04-01), Johnson, Jr.
patent: 4185706 (1980-01-01), Baker, III et al.
patent: 4391339 (1983-07-01), Johnson, Jr. et al.
patent: 4422882 (1983-12-01), Nelson et al.
patent: 4474251 (1984-10-01), Johnson, Jr.
patent: 4497664 (1985-02-01), Verry
Paper entitled "Flow Visualization and Numerical Simulation of Cavitating Self-Oscillating Jets" by Chahine, et al. of Tracor Hydronautics, Inc., presented at Seventh International Symposium on jet cutting technology, Jun. 26-28, 1984.
Publication entitled "Internal and External Acoustics and Large Structures Dynamics of Cavitating Self-Resonating Water Jets", Chahine et al., of Tracor-Hydronautics printed in Oct. 1987.
Paper entitled "Some Industrial Applications of Cavijet.RTM. Cavitating Fluid Jets" by Conn et al., presented at first U.S. Water Jet Symposium at Colorado School of Mines on Apr. 6-9, 1981.
Article entitled "Removing Marine Growth From Offshore Platforms with Cavitation Water Jets" by Vickers et al., Maritime Industries, Jan./Feb., 1985.
Publication entitled "On the Time Dependence of the Rate of Erosion Due to Impingement or Cavitation" by F. J. Heymann (undated).

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