Abstract
The techniques on the continuous water jet and the abrasive entrained water jet have highly developed and applications of the water jet technology have been expanded recently. However, there are some techniques still at the embryo stage which need to be developed for practical applications. Recent developments of new techniques in the jetting technology, pulsed jets, cavitating jets, abrasive suspension jets, ice abrasive jets, and liquefied gas jets, are reviewed in the present report.
