Marked Effects of Ambient Pressure on Impinging Erosion Induced by High-Speed Submerged Water Jets

Autor:	Kengo Asami, Hitoshi Soyama, Risaburo Oba, Toshiaki Ikohagi, Yoshiaki Yamauchi, Sato Kazunori
Rok vydání:	1995
Předmět:	Jet (fluid) Materials science Meteorology Mechanical Engineering Cavitation Erosion Mechanics Condensed Matter Physics Intensity (heat transfer) Working range Ambient pressure
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 61:785-792
ISSN:	1884-8346 0387-5016
DOI:	10.1299/kikaib.61.785
Popis:	In order to extend the working range of high-speed submerged water jets and to improve its accuracy confidence, the jet working characteristics are studied under the condition of widely varying ambient pressures P2. The erosion tests were systematically carried out by using aluminum-alloy specimens, and the aspects of the cavitation clouds around the jets were simultaneously observed. Clearly, the pressure P2 drastically affects the aspects of cavitation and its occurrence region. With increasing P2, the length of the cavitating jet decreases, so that the standoff distance, where the most severe erosion appears, shifs upstream. In short, the intensity and the distribution of the impulsive pressures induced by the cavitating jets also drastically change with P2. The impinging erosion characteristics are also sensitive to the standoff distance and the injection time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::55ef74c310cee7bb3dc72637c9c522c5 https://doi.org/10.1299/kikaib.61.785 Zobrazit plný text záznamu