Particle Sizing Using Particle Image Velocimetry

该方案的目标是发展一种基于粒子图像测速方法的全场粒子速度和尺寸测量技术。将对该技术的分辨率、准确性和偏差进行调查。该方法将以瞬时喷雾为例进行说明。主要的应用领域将是两相湍流和瞬变流。一个主要的贡献是颗粒大小测量的自动化，作为直接成像的替代方案。一个必须解决的关键问题是速度和颗粒大小之间的相关性。如果成功，建议的技术将是全场粒子测速和粒子尺寸测量相结合的重大进步，适用于任何形状的粒子、液滴或气泡。这是用相位多普勒测速仪进行点测量的一种补充方法。

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.