静电雾化场的数字全息实验研究

为了获取静电雾化场中雾滴的空间位置、尺寸和速度信息, 利用同轴数字显微全息方法, 设计并搭建了雾化场测量装置,横向测量范围12.5mm, 空间极限分辨率90.5LP/mm, 能够实现直径8μm雾滴的测量。在该装置上, 进行了单毛细管和多毛细管在稳定锥-射流模式下雾化场的测量, 取得了不同流量下雾滴平均直径和平均速度随流量的变化关系。结果表明, 该装置能够在单次测量中同时给出雾滴空间位置、尺寸和速度信息。该研究对于雾化参量的测量以及静电雾化研究有重要意义。

Abstract

To obtain data about position, size and velocity of droplets in the electrostatic spray, a device based on in-line digital microscopic holography for spray measurement was devised and established, which has lateral measurement scope of 12.5mm, utmost spatial resolution of 90.5LP/mm, and the capacity of measuring the droplet in 8μm diameter. Spray measurements under the Talyor-cone mode with single metal capillary and multiple metal capillaries were carried out respectively on the established device, and the relations between average diameter, average velocity of droplets and flow rate were obtained. Results show that position, size and velocity of droplets can be obtained simultaneously during a single-shot measurement by the device, which is of great significance to the measurement on spray and the research of electrostatic spray.

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徐青, 曹娜, 曹亮, 韩长材, 雷岚, 王清华. 静电雾化场的数字全息实验研究[J]. 激光技术, 2013, 37(2): 143. XU Qing, CAO Na, CAO Liang, HAN Chang-cai, LEI Lan, WANG Qing-hua. Experimental research of electrostatic spray with digital holography[J]. Laser Technology, 2013, 37(2): 143.

静电雾化场的数字全息实验研究

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