単一すず液滴と水による自発的に起こる蒸気爆発の機構解明の研究

概要

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The spontaneous vapor explosion generated by single drops of molten tin submerged in water is investigated using high-speed photography and pressure trace measurement. The vapor film begins to collapse at the edge of the disk-shaped drops and the collapsed zone spreads over the rest of the drop with a velocity of several m/s. Explosion experiments using a two-dimensional channel with a narrow space are also carried out to more clearly observe the explosion configuration and the fragmentation process. A model of the spontaneous vapor explosion with a single drop is presented on the basis of experimental observations. In this model, the size of the vapor bubble compared with the cloud of high-temperature debris is assumed to have a deep connection to heat transfer, and the collapse of the vapor bubble is also assumed to be induced by overexpansion and condensation.
一般社団法人日本機械学会の論文
1993-01-25