维也纳理工大学流水管道:流量控制循环和异性粒子动态的三维重建
Vlad Giurgiu1, Giuseppe Carlo Alp Caridi1, Mobin Alipour1,2
1Institute of Fluid Mechanics and Heat Transfer, TU Wien, 1060 Wien, Austria.
The Review of scientific instruments
|September 7, 2023
概括
这项研究引入了一种新的水道设施,用于研究流中的粒子动态. 该系统能够详细追踪复杂的粒子运动在受控的墙壁流中.
科学领域:
- 流体动力学 流体动力学
- 粒子动力学 粒子动力学
- 流研究 流研究
背景情况:
- 了解流中的粒子行为对于各种科学和工程应用至关重要.
- 现有的设施往往缺乏复杂粒子动态研究所需的控制和分辨率.
- 围墙流带来了独特的挑战,因为边界效应.
研究的目的:
- 开发和验证一种新的水平水道设施,用于研究粒子动态.
- 为了能够在精确控制的流条件下研究复杂形状的粒子.
- 为粒子运动的先进光学测量提供平台.
主要方法:
- 建造一条长的水平水道,其宽度与高度比较大,以确保充分发展流,并最大限度地减少侧墙效应.
- 达到高达0.8m/s的散装速度 (散装雷诺兹数高达7×10^4) 流量参数控制在±0.1%以内.
- 采用透明通道设计和多个摄像头来实现全面的光学访问和粒子的3D运动重建.
- 开发一种内部程序,用于重建粒子形状和跟踪转移和旋转运动.
主要成果:
- 该设施成功地产生了具有可控制特征的完全发达的流.
- 光学和重建系统允许详细测量复杂粒子的全部运动.
- 该系统已成功应用于研究微观的非同位素聚胺纤维.
结论:
- 开发的水道设施是研究壁上流中的粒子动态的一个有能力的工具.
- 先进的测量技术允许对复杂粒子运动进行前所未有的洞察.
- 这项研究为进一步研究复杂流程中的粒子-流体相互作用铺平了道路.
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