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首页> 美国政府科技报告 >Research Study of Droplet Sizing Technology Leading to the Development of an Advanced Droplet Sizing System
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Research Study of Droplet Sizing Technology Leading to the Development of an Advanced Droplet Sizing System

机译：液滴选型技术的研究进展导致先进的液滴选型系统的发展

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An instrument to measure the size and velocity of droplets was developed. The instrument uses one of two techniques, as appropriate. In the first technique two small laser beams of one color identify the center of a larger laser beam of a different color. This defines a region of almost uniform intensity where the light scattered by the individual droplets can be related to their size. The first technique uses the visibility of a Doppler burst and validates it against the peak intensity of the signal's pedestal. Results are presented for monodisperse, bimodal, trimodal, and polydisperse sprays produced by the Berglund-Liu droplet generator and a pressure nozzle. Size distributions of a given spray obtained using three different size ranges show excellent self-consistency in the overlapping region. Measurements of sprays of known characteristics exhibit errors in the order of 10%. The principles of operation and design criteria of the instrument are discussed in great detail.

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