Mapping cavitation impact field in a submerged cavitating jet

Peng, Kewen and Tian, Shouceng and Li, Gensheng and Alehossein, Habib (2018) Mapping cavitation impact field in a submerged cavitating jet. Wear, 396–397. pp. 22-33. ISSN 0043-1648

Abstract

A full assessment of the cavitation erosion potential of a cavitating jet necessitates the determination of the cavitation impact field. However, a detailed description of the impact intensity and spatial distribution of the large numbers of cavitation impacts has not been fully established. Here, we report such a map of cavitation impact field constructed with an inverse finite element method based on pitting analysis. The map presents the distribution of each impact on the impingement surface with its peak impact pressure, impact size, impact force, and impact energy. From this map, it is seen that cavitation impacts are preferentially localized in a ring region and a circular region at relatively small and large standoff distances, respectively. A statistical analysis of the impact data reveals those dominating impacts which contribute most to the overall intensity of the cavitating jet. To elucidate the underlying mechanism for the different impacts distribution patterns appearing on the impingement surface, the flow structures of the impinging jet are investigated by conducting a flow field simulation. The results show that the stagnation region and the recirculation zone above the impingement wall are the two key factors to the formation and variation of impact distribution patterns. Compared with the conventional measurement with pressure transducers, the present investigation is assumed as a further step towards depicting and interpreting the erosive intensity of a…


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 28 Mar 2018 02:16
Last Modified: 15 May 2018 03:47
Uncontrolled Keywords: cavitation impact, cavitating jet, distribution pattern, flow field
Fields of Research : 09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091406 Petroleum and Reservoir Engineering
Socio-Economic Objective: B Economic Development > 84 Mineral Resources (excl. Energy Resources) > 8402 Primary Mining and Extraction Processes of Mineral Resources > 840299 Primary Mining and Extraction of Mineral Resources not elsewhere classified
Identification Number or DOI: 10.1016/j.wear.2017.11.006
URI: http://eprints.usq.edu.au/id/eprint/33862

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