A method for three-dimensional particle sizing in two-phase flows

被引：18

作者：

Pereira, F ^{[1
]}

Gharib, M ^{[1
]}

机构：

[1] CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2004年 / 15卷 / 10期

关键词：

two-phase flows; defocusing digital particle image velocimetry; particle sizing;

D O I：

10.1088/0957-0233/15/10/012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A method is devised for true three-dimensional (313) particle sizing in two-phase systems. Based on a ray-optics approximation of the Mie scattering theory for spherical particles, and under given assumptions, the principle is applicable to intensity data from scatterers within arbitrary interrogation volumes. It requires knowledge of the particle 31) location and intensity, and of the spatial distribution of the incident light intensity throughout the measurement volume. The new methodology is particularly suited for Lagrangian measurements: we demonstrate its use with the defocusing digital particle image velocimetry technique, a 31) measurement technique that provides the location, intensity and velocity of particles in large volume domains. We provide a method to characterize the volumetric distribution of the incident illumination and we assess experimentally the size measurement uncertainty.

引用

页码：2029 / 2038

页数：10

共 34 条

[1] EXPERIMENTAL METHODS IN MULTIPHASE FLOWS [J].