Interaction of a Compressible Bubbly Flow With an Obstacle Placed Within a Shedding Partial Cavity

9th International Symposium on Cavitation

Ganesh, Harish^1 ; Mäkiharju, Simo A.^1 ; Ceccio, Steven L.^1

University of Michigan, Ann Arbor

MI

48109, United States^1

关键词: Bubbly flow;    Dominant mechanism;    Flow features;    Flow physics;    Flow visualisation;    Shock dynamics;    Shock fronts;    X ray densitometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012151/pdf
DOI  :  10.1088/1742-6596/656/1/012151

来源: IOP

【 摘 要 】

Bubbly shocks act as the dominant mechanism of shedding of partial cavities under certain conditions. The compressible nature of low void fraction regions in a partial cavity can provide conditions necessary for the existence of such bubbly shocks. Using X-ray densitometry as a flow visualisation mechanism, the dynamics of bubbly shock fronts with and without the presence of an obstacle are presented. Different flow features associated with the shock dynamics are identified and the associated flow physics explained.