Visualization of the trapping of inertial particles in a laminar mixing tank
Visualization of the trapping of inertial particles in a laminar mixing tank
复制标题
层流混合罐中惯性颗粒捕获的可视化
DOI：
10.1016/j.ces.2015.12.023
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发表时间：
2016
影响因子：
4.7
通讯作者：
G. Metcalfe
中科院分区：
文献类型：
--
作者：
Steven Wang;R. Stewart;G. Metcalfe
我们报告的新方法和结果的轨迹可视化和跟踪的大惯性粒子在层流（混沌）混合槽。使用特别设计的发光胶囊，粒子轨道可视化使用条纹摄影，以揭示胶囊在层流中移动的轨迹线。我们提出了可视化结果意外捕获的颗粒，从而有限尺寸的颗粒/胶囊可以自发本地化到涡流管中的层流搅拌系统。一旦进入管道，大的惯性粒子就像被动粒子一样在螺旋轨道上运动。混合罐已经使用了几个世纪，但这种捕集现象一直被忽视。我们还使用外部定位的相机和平面镜在校准的设置随时间推移测量大惯性粒子的三维位置。由于本研究中使用的光胶囊即使在流体浑浊时也具有非常高的对比度，因此这项工作为进一步研究开发大（工业）规模流量测量技术提供了良好的基础。
We report on new methods and results for the trajectory visualization and tracking of large inertial particles in a laminar (chaotic) mixing tank. Using specially designed light-emitting capsules, particle orbits were visualized using streak photography to reveal pathlines of capsules moving in the laminar fluid flow. We present visualization results on unexpected trapping of particles whereby finite-sized particles/capsules can spontaneously localize into the vortex tubes in the laminar stirred system. Once into tubes, large inertial particles move in helical orbits as do passive particles. Mixing tanks have been in use over a number of centuries but this trapping phenomenon has been consistently ignored. We also measure the three-dimensional position of large inertial particles over time using an externally positioned camera and planar mirror in a calibrated setup. As the light capsules used in this study give very high contrast even when the fluid is murky, the work provides a sound basis for further research development of measurement techniques for large (industrial) scale flows.
影响因子：
2.1
作者：
Abram, Christopher;Fond, Benoit;Beyrau, Frank
通讯作者：
Beyrau, Frank