Particle Sizing Using Particle Image Velocimetry

本提案的目的是发展一种基于粒子图像测速方法的粒子速度和尺寸的全场测量技术。研究了该技术的分辨率、精度和偏差。该方法将以瞬态喷雾为例说明。应用的主要领域将是两相湍流和瞬态流动。一个主要的贡献是粒度测量的自动化，作为直接成像的替代方案。必须解决的一个关键问题是速度和粒度之间的关系。如果成功，所提出的技术将是结合全场粒子测速和粒子尺寸测量的重大进步，可应用于任何形状的粒子、液滴或气泡。这是相位多普勒测速点测量的补充方法。

The objective of this proposal is the development of a full- field measuring technique for particle velocity and size based on particle image velocimetry methods. The resolution, accuracy and biases of the technique will be investigated. The approach will be illustrated for a transient spray. The main areas of application will be in two-phase turbulent and transient flows. A main contribution is the automation of particle size measurement, as an alternative to direct imaging. A key issue which has to be solved is the correlation between the velocity and particle size. If successful, the proposed technique will be a significant advancement for a combined full-field particle velocimetry and particle sizing measurement, with application to particles, droplets or bubbles of any shape. This is a complimentary method for the point measurements with phase Doppler velocimetry.