909 水銀キャビテーション気泡崩壊に励起されるソノルミネッセンス(OS12-(1)オーガナイズドセッション《流体工学・熱流体》)

概要

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Cavitation occurs in the interface between liquid and solid boundary, and causes the damage on the solid wall. Cavitation damage induced by the pressure wave in mercury is a critical issue to realized a MW-class spallation neutron source because the damage degrades the structural integrity of the mercury target vessel. The authors found a luminescence phenomenon due to the cavitation bubble collapsing, through investigating the mechanism of cavitation bubble formation in mercury. In this study, to investigate the relationship of luminescence intensity and cavitation intensity the luminescence phenomena in mercury were experimentally measured using a photomultiplier. The result showed that the luminescence intensity were correlated with the acoustic vibration due to collapse of cavitation bubbles that correspond to the cavitation damage.
一般社団法人日本機械学会の論文
2010-08-27