Abstract
Effects of pulsating water jet on aluminium alloy with variously modified surface
Highlights
Over a hundred years, researchers have been interested in the interaction of a liquid with a solid
One of the first researchers dealing with this subject was Cook [1] who wrote his article on the surface erosion in 1928. He clearly recognized the importance of the water hammer pressure
Pulsating water jet is an extension of the conventional jet, consisting of an array of high-speed water pulses
Summary
Researchers have been interested in the interaction of a liquid with a solid. One of the first researchers dealing with this subject was Cook [1] who wrote his article on the surface erosion in 1928. He clearly recognized the importance of the water hammer pressure. The pulsating water jet (PWJ) has been successfully used for several industrial applications, the fundamentals of the technique remains unclear. When a pulsating water jet impinges a target, the momentum flux through the nozzle is not transmitted to the target material as a steady force, but as a discontinuous sequence of impacts, creating high momentary stresses in the impingement zone. The peak pressure acting on the surface is not the stagnation pressure, but the significantly higher water hammer pressure [2]
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