On stress wave interactions in liquid impact

• Published in: Wear Vol. 258; no. 1; pp. 588 - 595
• Main Author: Bourne, N.K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 2005; Amsterdam Elsevier Science; New York, NY
• Subjects: Applied sciences; Bubble collapse; Cavitation; Exact sciences and technology; Friction, wear, lubrication; Hydrodynamic; Ignition; Jetting; Machine components; Mechanical engineering. Machine design; Shock wave; Jetting; Cavitation; Shock wave; Ignition; Bubble collapse; Hydrodynamic; Collapse; Stress analysis; Stress wave; Elastic wave; Experimental study; Liquid jet; Drop; Liquid; Bubble; Radius of curvature; Cavity; Tribology
• ISSN: 0043-1648; 1873-2577
• DOI: 10.1016/j.wear.2004.09.027

There are many situations in which the impact of a liquid jet is of importance. Such an event induces stress fields that interact to apply localized compressive or tensile loading to the targets impacted. Initially, the surface sees compression, but, after a short time, tensile forces are also experienced. At later times, the flow of the rest of the following liquid onto the target applies a further loading of lesser magnitude. In this respect, jet impact differs from that induced by a drop having the same radius of curvature. Experimental and numerical studies of liquid jets hitting liquids are presented, with results showing the effects of a cavity collapse in a reactive material. It is shown that it is the jet impact that leads to ignition rather than other mechanisms in the observed behaviour.