1213 翼端漏れ流れに生じる渦キャビテーションの熱力学的効果(OS12-3 流体機械の諸問題,オーガナイズドセッション)

概要

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Visualization of tip leakage vortex cavitation was conducted to investigate thermodynamic effects on cavitation in liquid nitrogen. The photographs denoted that the tip leakage vortex cavitation in liquid nitrogen was consisted of tinier bubbles than that in water and collapsed near the trailing edge. These can be considered because the development of cavity was suppressed by thermodynamic effects and the tip leakage vortex was modified by the tiny bubbles. Moreover, the image analyses focusing on the evolution of cavity radius denoted that the radius was smaller and the peak shifted downstream as thermodynamic parameter Σ^* was larger. This can be considered because the mechanism of thermodynamic effect on tip leakage vortex cavitation is different between a large cylindrical bubble in water and a cluster of tiny bubbles in liquid nitrogen.
一般社団法人日本機械学会の論文
2010-10-29