Cavitation Inception in Immersed Jet Shear Flows

9th International Symposium on Cavitation

Lockett, R.D.^1 ; Ndamuso, N.^1 ; Price, R.^2

Dept of Mech. Eng. and Aero., City University, London

EC1V 0HB, United Kingdom^1

Shell Global Solutions, Brabazon House, Threapwood Rd, Mancs

M22 0RR, United Kingdom^2

关键词: Cavitation inception;    Conical nozzle;    Downstream pressure;    Fluid pressures;    High velocity jet;    Incipient cavitation;    Upstream pressure;    Variable concentration;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012090/pdf
DOI  :  10.1088/1742-6596/656/1/012090

来源: IOP

【 摘 要 】

Cavitation inception occurring in immersed jets was investigated in a purpose-built mechanical flow rig. The rig utilized custom-built cylindrical and conical nozzles to direct high-velocity jets of variable concentration n-octane-hexadecane mixtures into a fused silica optically accessible receiver. The fluid pressure upstream and down-stream of the nozzles were manually controlled. The study employed a variety of acrylic and metal nozzles. The results show that the critical upstream pressure to downstream pressure ratio for incipient cavitation decreases with increasing n-octane concentration for the cylindrical nozzles, and increases with increasing n-octane concentration for the conical nozzle.