Dynamic ILIDS measurement by means of high-speed Nd:YLF laser
Dynamic ILIDS measurement by means of high-speed Nd:YLF laser
复制标题
利用高速 Nd:YLF 激光器进行动态 ILIDS 测量
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Saito
中科院分区：
文献类型：
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作者：
T. Kawaguchi;I. Satoh;T. Saito
激光干涉液滴尺寸测量技术（ILIDS）是一种新的拉格朗日方法，用于测量液滴尺寸和速度矢量，研究喷雾和泡状流等分散两相系统中液、气两相之间的动态相互作用。通过高分辨率数码相机和脉冲激光器拍摄的瞬时离焦图像，得到液滴尺寸。通过互相关图像处理程序（PTV）计算单个液滴的速度矢量。本文叙述了用高速高分辨率照相机和双脉冲高频Nd：YLF激光器进一步改进ILIDS技术。实验证明了单个液滴在加热空气中的几百微秒尺寸转变。
Interferometric laser imaging for droplet sizing technique (ILIDS) is the novel Lagrangian approach for the measurement of droplet size and velocity vector to investigate the dynamic interaction between liquid and gas phases in such dispersed two phase system as spray and bubbly flows. The droplet size was obtained by the instantaneous out-of-focus image, which is captured by the high-resolution digital camera and pulsed laser. The velocity vector of individual droplet was calculated by the cross-correlational image processing procedure (PTV). The paper describes the further improvement of ILIDS technique by means of a high-speed and high-resolution camera in conjunction with the double-pulsed high-frequency Nd:YLF laser. The experiments demonstrated the several hundred microsecond size transition of the single droplet in the heated air.