Pages 105-106
Experimental studies are carried out to clarify the structures and erosive properties of cavitating jets issuing from rectangular nozzles. The jet is supplied from a high-pressure pump and injected through a rectangular nozzle of aspect ratio of two or four. It discharged into a test cell at specified constant pressure and impinges against a test specimens of aluminum alloy. The structures of the jets are observed by instantaneous photographs and high-speed photography. The experiments are conducted at the injection pressure of 18 MPa. It is shown that the structures and erosive properties of the rectangular jets are completely different from those of circular cavitating jets.
