两相液滴对强电磁辐射的响应。
Response of two-phase droplets to intense electromagnetic radiation.
作者信息
Spann J F, Maloney D J, Lawson W F, Casleton K H
出版信息
Appl Opt. 1993 Apr 20;32(12):2152-8. doi: 10.1364/AO.32.002152.
The response of two-phase droplets to intense radiant heating is studied to determine the incident power that is required for causing explosive boiling in the liquid phase. The droplets studied consist of strongly absorbing coal particles dispersed in a weakly absorbing water medium. Experiments are performed by confining droplets (radii = 37, 55, and 80 microm) electrodynamically and irradiating them from two sides with pulsed laser beams. Emphasis is placed on the transition region from accelerated droplet vaporization to droplet superheating and explosive boiling. The time scale observed for explosive boiling is more than 2 orders of magnitude longer than published values for pure liquids. The delayed response is the result of energy transfer limitations between the absorbing solid phase and the surrounding liquid.
研究了两相液滴对强辐射加热的响应，以确定使液相发生爆炸沸腾所需的入射功率。所研究的液滴由分散在弱吸收性水介质中的强吸收性煤颗粒组成。通过电动约束液滴（半径分别为37、55和80微米）并从两侧用脉冲激光束照射来进行实验。重点关注从液滴加速汽化到液滴过热和爆炸沸腾的过渡区域。观察到的爆炸沸腾时间尺度比纯液体已发表的值长2个多数量级。延迟响应是吸收性固相和周围液体之间能量传递限制的结果。
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