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流动显示和图像处理期刊

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ISSN 打印: 1065-3090

ISSN 在线: 1940-4336

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00013 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

A STUDY OF CAVITATION AND NOISE IN RECTANGULAR ORIFICES WITH ONE CHAMFERED EDGE

卷 5, 册 1, 1998, pp. 29-40
DOI: 10.1615/JFlowVisImageProc.v5.i1.40
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摘要

Rotary valves are constructed using a sleeve that contains axially aligned rectangular sharp-edged slots. The sleeve rotates on a shaft that also contains axially aligned rectangular chamfer-edged slots. Flow through the valve is controlled by the alignment of the sleeve slots and the shaft slots. The rectangular orifices through which the fluid flows are only tens of micrometers wide at small valve openings and as a result of the sharp edge-chamfered edge arrangement, the flow is presented with very different flow passages, depending upon the direction of flow through the orifices. In one direction the flow is led into the orifice through two converging surfaces and this flow is referred to as "upflow". The flow in the opposite direction is referred to as "downflow". Cavitation can be a serious problem in these valves. A novel test rig was constructed to allow the cavitating hydraulic fluid flowing through a single orifice in either direction to be viewed. It was found that the "upflow" configuration was significantly less prone to cavitation and associated noise than the "downflow" configuration.

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