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Theory of cross-correlation analysis of PIV images : Image analysis as measuring technique in flows

R. D. Keane, +1 more
TL;DR: In this article, cross-correlation methods of interrogation of successive single-exposure frames can be used to measure the separation of pairs of particle images between successive frames, which can be optimized in terms of spatial resolution, detection rate, accuracy and reliability.
Book ChapterDOI

Elements of Gas Dynamics

Raymond Brun
Journal ArticleDOI

Digital particle image thermometry/velocimetry: a review

TL;DR: Digital particle image thermometry/velocimetry (DPIT/V) is a relatively new methodology that allows for measurements of simultaneous temperature and velocity within a two-dimensional domain this article.
Journal ArticleDOI

Statistical properties of turbulence: An overview

TL;DR: In this article, the authors present an introductory overview of several challenging problems in the statistical characterization of turbulence and provide examples from fluid turbulence in three and two dimensions, from the turbulent advection of passive scalars, turbulence in the one-dimensional Burgers equation, and fluid turbulent in the presence of polymer additives.
References
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Book ChapterDOI

CHAPTER 4 – Wind-tunnel Techniques

Peter Sachs
Book

Statistical Procedures for Engineering, Management, and Science

TL;DR: This book presents the fundamentals of probability analysis and statistical tools which assist in decision making, using a language that is understandable to the person learning statistics, not in a style that simply impresses those already expert in statistics.
Journal ArticleDOI

Flow tagging velocimetry in incompressible flow using photo-activated nonintrusive tracking of molecular motion (PHANTOMM)

TL;DR: In this paper, the authors report the development of a new optical flow tagging velocimetry technique for hydrodynamic flows, which utilizes highly water-soluble caged dye Photo-Activated Fluorophores (PAF's) which serve as fluorescent tracers, with essentially indefinite lifetime.
Patent

System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter.

Abstract: A flow field seeded with small particles is illuminated by collimated, monochromatic laser light sheet (16). Doppler shifted scattering from particle motion is imaged by an optical system (22). An optical frequency-to-intensity converter (24) is located at the image plane such that the transmitted image contains a simultaneous two-dimensional measurement of flow velocity along a direction determined by a laser beam and observer (converter) direction. These images can be observed directly or through a TV-2-D array camera and monitor or processed through a computer system (28).