長方形ノズルから噴出するキャビテーション噴流の流動構造と壊食特性 : 流体工学,流体機械

概要

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Experimental studies are carried out to clarify the structures and erosive properties of rectangular cavitating jets. The jet is supplied from a high pressure pump and injected through a rectangular nozzle of aspect ratio of two or four. It discharges into a test cell at specified constant pressure and impinges against a test specimen of aluminum alloy. The structures of the jets are observed by instantaneous photographs and high-speed movies. The erosion tests are conducted at the injection pressure of 18 MPa and the cavitation number of 0.01, 0.02, and 0.03. It is shown that the structures of the cavitating jets issuing from the rectangular nozzles are completely different from those of circular cavitating jets. Corresponding to the jet structures, the erosive properties of the rectangular cavitating jets are different from those of the circular cavitating jets.
社団法人日本機械学会の論文
2001-07-25