A colour PIV system employing fluorescent particles for two-phase flow measurements

• Published in: Measurement science & technology 1999-09, Vol.10 (9), p.824-830
• Main Authors: Towers, D P, Towers, C E, Buckberry, C H, Reeves, M
• Format: Article
• Language: English
• Subjects: Biological and medical sciences; Color vision: color detection, adaptation, and discrimination; Exact sciences and technology; Eye and associated structures. Visual pathways and centers. Vision; Fundamental and applied biological sciences. Psychology; Fundamental areas of phenomenology (including applications); Imaging and optical processing; Measurements common to several branches of physics and astronomy; Metrology, measurements and laboratory procedures; Optical elements, devices, and systems; Optics; Physics; Range finders, remote sensing devices, laser doppler velocimeters, sar, and lidar; Velocity, acceleration and rotation; Vertebrates: nervous system and sense organs
• ISSN: 0957-0233; 1361-6501
• DOI: 10.1088/0957-0233/10/9/309

Describes a novel approach for separating the phases in a two-phase flow and measuring their velocity fields simultaneously. The method is an extension of two-colour particle image velocimetry and utilizes colour recording and fluorescently doped seed particles in one phase of the flow. This concept is developed into a number of practical optical recording systems. The simplest of these has been evaluated experimentally and some proof-of-principle results obtained. Image processing algorithms are employed to separate the particle images from each phase of the flow and between the first and second illumination pulse. The experimental data are presented from a laboratory flow rig consisting of two impinging jets. (Original abstract)