Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Multiphase Science and Technology

ISSN Print: 0276-1459
ISSN Online: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v19.i3.40
pages 269-285

A THREE-DIMENSIONAL PIV USING INTENSITY GRADIENTS OF A TWO-COLOR LASER BEAM

Shigeo Hosokawa
Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe, 657-8501, Japan
Akio Tomiyama
Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe, 657-8501, Japan

ABSTRACT

Multiphase flows and turbulent flows are inevitably three-dimensional and, therefore, a three-dimensional three-component PIV (3D3C-PIV), which can measure a three-dimensional distribution of three velocity components in a flow, is required for the understanding of a three-dimensional flow structure. In this study, we developed a 3D3C-PIV by making use of the intensity gradients of a two-color laser beam. The significant features of the present method are (i) a three-dimensional distribution of three velocity components is measurable, (ii) simultaneity in measured vectors is guaranteed perfectly, (iii) the optical system is simple and economical because it does not require scanning optics, high-repetition light sources, and cameras, (iv) the calibration of optical distortion required in a stereoscopic PIV/PTV is not necessary , and (v) the algorithm of image processing is simpler compared with 3D-PTV. Feasibility tests were carried out by applying the developed method to a jet flow and a flow around drops. As a result, the feasibility and potential of the proposed method was confirmed.