Air release measurements of V-oil 1404 downstream of a micro orifice at choked flow conditions

9th International Symposium on Cavitation

Freudigmann, H.-A.^1 ; Iben, U.^1 ; Pelz, P.F.^2

Robert Bosch GmbH, Robert-Bosch-Campus 1, Renningen

D-71272, Germany^1

Department of Fluid Systems, TU Darmstadt, Darmstadt

D-64289, Germany^2

关键词: Back flow;    Choked-flow condition;    Different pressures;    Dissolved air;    Imaging method;    Micro-orifice;    Release measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012113/pdf
DOI  :  10.1088/1742-6596/656/1/012113

来源: IOP

【 摘 要 】

This study presents measurements on air release of V-oil 1404 in the back flow of a micro orifice at choked flow conditions using a shadowgraph imaging method. The released air was determined at three positions downstream of the orifice for different pressure conditions. It was found that more than 23% of the initially dissolved air is released and appears downstream of the orifice in the form of bubbles.