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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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Journal ArticleDOI

The RELIEF flow tagging technique and its application in engine testing facilities and for helium-air mixing studies

TL;DR: Raman excitation plus laser-induced electronic fluorescence (RELIEF) images the motion of oxygen molecules in air and other gas mixtures as mentioned in this paper, which is accomplished by tagging oxygen molecules through vibrational excitation and imaging them after a short period of time by LIEF.
Journal ArticleDOI

Nitric oxide flow tagging in unseeded air.

TL;DR: A scheme for molecular tagging velocimetry is presented that can be used in air flows without any kind of seeding and single laser pulses are used for creation and visualization of NO.
Journal ArticleDOI

A study of the constant-temperature hot-wire anemometer

TL;DR: In this article, the authors analyzed the performance of the conventional "bridge-feedback amplifier" constant-temperature hot-wire anemometer to determine its static and dynamic response, and the root loci of the system were mapped out and the consequences of the analysis were discussed from the viewpoint of both the operator and the designer.
Journal ArticleDOI

Unseeded velocity measurement by ozone tagging velocimetry.

TL;DR: Ozone tagging velocimetry is developed for unseeded velocity measurement of air flows and records the O(2) fluorescence from the initial and the final line positions to permit the velocity profile along the line to be determined.