Cross-correlation analysis of particle image fields for velocity measurement

R. D. Keane, Ronald Adrian

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In order to improve the performance of particle image velocimetry in measuring instantaneous velocity fields, direct cross- correlation of image fields can be used in place of auto-correlation methods of interrogation of double or multiple exposure recordings. Furthermore with improved technology in high speed photographic recording and increased resolution of video array detectors, 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. By knowing the extent of image shifting used in a multiple exposure and by a priori knowledge of the mean flow-field, the cross-correlation of different sized interrogation spots with known separation can be optimized in terms of spatial resolution, detection rate, accuracy and reliability. (from Authors)

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherNew York, USA, American Society of Mechanical Engineers; Fluid
ISBN (Print)0791808742, 9780791808740
StatePublished - Jan 1 1991
Externally publishedYes

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Keane, R. D., & Adrian, R. (1991). Cross-correlation analysis of particle image fields for velocity measurement. In Unknown Host Publication Title New York, USA, American Society of Mechanical Engineers; Fluid.