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Development of a volumetric three-dimensional particle tracking velocimetry system and its application to mixing in a stirred tank.

机译:三维三维粒子跟踪测速系统的开发及其在搅拌釜混合中的应用。

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摘要

Quantitative fluid flow visualization and measurements are highly demanded in mechanical, chemical, medical and many other science and engineering fields to investigate fluid phenomena, understand theoretical principles and support computational prediction. Three-dimensional Particle Tracking Velocimetry (3D-PTV) is a powerful and comprehensive measurement technique that provides instantaneous 3D volumetric velocity information and Lagrangian description of particle trajectories. This work is based on the 3D-PTV technique that was developed at the Institute of Geodesy and Photogrammetric at the Swiss Federal Institute of Technology, Zurich. Theoretical principles of the technique were studied based on geometric imaging and computer vision. A complete 3D-PTV system was designed, assembled, synchronized, and tested. A study of the accuracy of the 3D-PTV system in terms of the influence of each component was performed. 2D-PIV (Particle Image Velocimetry) measurements were done on the same experimental setup used in the 3D-PTV system. Results showed good quantitative agreement between the velocity information obtained with the two systems, which validates the results of the 3D-PTV measurement system. The developed 3D PTV system was applied to the study of mixing in a stirred tank showing that this technique has great potential for the study of low Reynolds number flows where the time-resolved trajectory of particles is important. Further improvement on the configurations and data analysis of the system can provide higher accuracy, higher spatial and temporal resolution, and less complexity, which will lead to an extension on its application.
机译:在机械,化学,医学和许多其他科学与工程领域中,对流体流动的定量可视化和测量提出了很高的要求,以研究流体现象,理解理论原理并支持计算预测。三维粒子跟踪测速(3D-PTV)是一种强大而全面的测量技术,可提供瞬时3D体积速度信息和粒子轨迹的拉格朗日描述。这项工作基于3D-PTV技术,该技术是由苏黎世瑞士联邦理工学院的大地测量学与摄影测量研究所开发的。基于几何成像和计算机视觉研究了该技术的理论原理。设计,组装,同步和测试了完整的3D-PTV系统。就每个组件的影响而言,对3D-PTV系统的准确性进行了研究。 2D-PIV(颗粒图像测速)测量是在3D-PTV系统中使用的相同实验设置上进行的。结果表明,两个系统获得的速度信息之间具有良好的定量一致性,这验证了3D-PTV测量系统的结果。已开发的3D PTV系统应用于搅拌釜中的混合研究,表明该技术对于研究低雷诺数流(其中颗粒的时间分辨轨迹很重要)具有很大的潜力。对系统的配置和数据分析的进一步改进可以提供更高的准确性,更高的时空分辨率和更低的复杂度,这将导致其应用范围的扩展。

著录项

  • 作者

    Cheng, Ye.;

  • 作者单位

    Rutgers The State University of New Jersey - New Brunswick.;

  • 授予单位 Rutgers The State University of New Jersey - New Brunswick.;
  • 学科 Engineering Aerospace.;Engineering Mechanical.
  • 学位 M.S.
  • 年度 2009
  • 页码 130 p.
  • 总页数 130
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空、航天技术的研究与探索;机械、仪表工业;
  • 关键词

  • 入库时间 2022-08-17 11:37:38

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