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Multiphase Science and Technology

Publicou 4 edições por ano

ISSN Imprimir: 0276-1459

ISSN On-line: 1943-6181

SJR: 0.144 SNIP: 0.256 CiteScore™:: 1.1 H-Index: 24

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

Volume 19, Edição 3, 2007, pp. 269-285
DOI: 10.1615/MultScienTechn.v19.i3.40
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RESUMO

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.

CITADO POR
  1. Hosokawa Shigeo, Matsumoto Takaaki, Tomiyama Akio, Tomographic spatial filter velocimetry for three-dimensional measurement of fluid velocity, Experiments in Fluids, 54, 9, 2013. Crossref

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