从喷雾点测量生成组合液滴尺寸分布

2019/08/19   下载量： 3 次

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采用德国LaVision公司的SprayMaster喷雾测量分析系统和美国Artium Technologies 公司的相位多普勒粒子分析仪PDI-200MD对喷雾的几何形态和液滴的粒径速度进行了测量获得了组合液滴尺寸分布信息。

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    In this investigation, methods used to generate combined drop size distributions, from discrete measurement points, are developed and evaluated. A hydraulic, at spray and an internally air-atomized, multi-orifice spray are investigated experimentally; representing common but distinctly difierent sprays. The details of each spray plume are captured with an extensive matrix of measurement points, which are then used to evaluate the drop size distribution difierence across each spray plume, and to calculate combined drop size
distributions throughout a planar cross-section of each spray. Weighted-average distributions are generated, using the local flux and discrete area at each measurement point, which are relevant physical characteristics within each spray plume. It was found previously by Bade and Schick [1] that measurements should be performed at approximately each 10% interval of the overall spray plume size in order to achieve errors less than 5% for combined spray plume statistics. Also, the measurements should be performed along both the x and y axis for a flat spray, and along a single-axis from the center-to-edge for a multi-orifice air-atomized spray for drop size investigations. The developed methods allow the logical combination of
drop size distributions, collected at many points, to be used to generate holistic drop size distributions that are representative of a planar cross-section within a spray plume.

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北京欧兰科技发展有限公司
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