2320 キャビテーションジェットの壊食性能に及ぼす水温の効果(GS 一般講演)

概要

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The cavitating jet technology has progressively developed in several industrial fields, such as machining, cleaning and peening in water. It has been widely known that the mass loss rate induced by the cavitating jet in water has two peaks for the standoff distance. In the present study, the mass loss rate induced by the impingement of cavitating jet was experimentally investigated with specimens of pure aluminum under four different water temperature conditions, in order to clarify effects of the injection water temperature and the surrounding water temperature on capability of the cavitating jet. From the results, it was recognized that the increase of the injection water temperature increases the mass loss rate in the erosion circle located in the jet center at the first peak independent of the surrounding water temperature. On the other hand, it was found that the increase in both temperatures of the injection water and the surrounding water caused to increase the mass loss rate in the erosion ring around the jet axis near the second peak.
2006-05-28