Enhancing liquid jet erosion

Details Enhancing liquid jet erosion Enhancing liquid jet erosion

E - Fixed Constructions

21

C

255/11, 262/68

E21C 25/60 (2006.01) B05B 17/06 (2006.01) B08B 3/02 (2006.01) B26F 3/00 (2006.01) E02F 3/92 (2006.01) E21B 7/18 (2006.01) F15D 1/08 (2006.01)

Patent

CA 1210414

ABSTRACT Process and apparatus for enhancing the erosive intensity of a high velocity liquid jet when the jet is impacted against a surface for cutting, cleaning, drilling or otherwise acting on the surface. A preferred method comprises the steps of forming a high velocity liquid jet, oscillating the velocity of the jet at a preferred Strouhal number, and impinging the pulsed jet against a solid surface to be eroded. Typically the liquid jet is pulsed by oscillating the velocity of the jet mechanically or by hydrodynamic and acoustic interactions. The invention may be applied to enhance cavitation erosion in a cavitating liquid jet, or to modulate the velocity of a liquid jet exiting in a gas, causing it to form into discrete slugs, thereby producing an intermittent percussive effect.

391372

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