Large-scale particle shadow tracking and orientation measurement with collimated light
Large-scale particle shadow tracking and orientation measurement with collimated light
复制标题
使用准直光进行大规模粒子阴影跟踪和方向测量
DOI：
10.1007/s00348-023-03578-y
复制
发表时间：
2023
影响因子：
2.4
通讯作者：
DiBenedetto, Michelle
中科院分区：
文献类型：
--
作者：
Baker, Lucia;DiBenedetto, Michelle
拉格朗日粒子跟踪实验是了解流体中粒子输运的重要工具。然而，远距离跟踪粒子的成本很高，而且受到光线强度和摄像头数量的限制。为了在大体积流体中以最小的代价增加测量到的粒子轨迹的长度，我们开发了一种大规模粒子阴影跟踪方法。这项技术能够准确地跟踪毫米级粒子及其在米级实验室流体中的取向。通过跟踪来自大功率LED的宽准直光投射的粒子阴影，可以获得2D粒子的位置和速度，以及它们的3D取向。与传统的体积粒子跟踪技术相比，该方法能够使用简单得多的成像和跟踪技术来测量更大范围内的粒子运动。我们在波浪风驱动的流动中演示了这种方法，我们成功地跟踪了粒子并重建了它们的取向。
Lagrangian particle tracking experiments are a key tool to understanding particle transport in fluid flows. However, tracking particles over long distances is expensive and limited by both the intensity of light and number of cameras. In order to increase the length of measured particle trajectories in a large fluid volume with minimal cost, we developed a large-scale particle-shadow-tracking method. This technique is able to accurately track millimeter-scale particles and their orientations in meter-scale laboratory fluid flows. By tracking the particles’ shadows cast by a wide beam of collimated light from a high-power LED, 2D particle position and velocity can be obtained, as well as their 3D orientation. Compared with traditional volumetric particle tracking techniques, this method is able to measure particle kinematics over a larger area using much simpler imaging and tracking techniques. We demonstrate the method on sphere, disk, and rod particles in a wavy wind-driven flow, where we successfully track particles and reconstruct their orientations.
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DOI：
--
发表时间：
2020
期刊：
Journal of Geophysical Research: Oceans
影响因子：
--
作者：
N. Masnadi;C. Chickadel;A. Jessup
通讯作者：
A. Jessup
影响因子：
3.7
作者：
Kee Onn Fong;F. Coletti
通讯作者：
Kee Onn Fong;F. Coletti
湍流对流之美：粒子追踪的努力
影响因子：
2.7
作者：
P. Godbersen;J. Bosbach;D. Schanz;A. Schröder
通讯作者：
A. Schröder
影响因子：
3.7
作者：
Kee Onn Fong;Xinzhi Xue;R. Osuna;A. Aliseda
通讯作者：
A. Aliseda
影响因子：
2.4
作者：
J. Hou;F. Kaiser;A. Sciacchitano;D. Rival
通讯作者：
J. Hou;F. Kaiser;A. Sciacchitano;D. Rival