Experimental evidence of nucleation from wall-bounded nuclei in a laminar flow

9th International Symposium on Cavitation

Groß, T.F.^1 ; Ludwig, G.^1 ; Pelz, P.F.^1

Department of Fluid Systems, TU Darmstadt, Darmstadt

64289, Germany^1

关键词: Cavitation inception;    Cyclic process;    Experimental evidence;    Experimental set up;    High Speed;    Investigation and analysis;    Self;    excited;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012034/pdf
DOI  :  10.1088/1742-6596/656/1/012034

来源: IOP

【 摘 要 】

The importance of nucleation from wall-bounded nuclei for cavitation and especially cavitation inception is undisputed. Although various theories and models found their way to standard literature, there is a lack of experiments allowing a closer look onto the process of nucleation. In the present paper we present a new experimental set-up that allows the investigation and analysis of nucleation from wall-bounded nuclei. The experimental findings support an extended understanding of nucleation as a self excited cyclic process. Impressive high-speed visualisations can be found in the supplementary material.