Multi-point optical measurements of simultaneous vectors in unsteady flow-a review

Research output: Contribution to journalArticle

209 Citations (Scopus)

Abstract

Optical techniques for measuring large numbers of simultaneous velocity vectors in two- and three-dimensional regions of fluid flows are reviewed. These nonobtrusive methods provide spatial information of the type that is available from flow visualization with accuracy approaching that of single-point methods such as laser Doppler velocimetry and hot wire. The principle underlying each technique is the measurement of the simultaneous displacemen of images of many marked fluid particles. Many methods are available. These include streak photography; marker image tracking methods using photography, cinematography, holography, and video recording; line tracking methods using hydrogen bubbles and photochromic tracers; and fluorescent particle tracing. Pulsed laser methods, specifically laser speckle velocimetry and particle image velocimetry, provide high spatial resolution and good accuracy.

Original languageEnglish (US)
Pages (from-to)127-145
Number of pages19
JournalInternational Journal of Heat and Fluid Flow
Volume7
Issue number2
DOIs
StatePublished - 1986
Externally publishedYes

Fingerprint

unsteady flow
Unsteady flow
optical measurement
Velocity measurement
streak photography
cinematography
flow visualization
photography
particle image velocimetry
tracing
holography
markers
fluid flow
lasers
tracers
Streak cameras
pulsed lasers
Video recording
bubbles
Lasers

Keywords

  • optical techniques
  • turbulent flow
  • unsteady flow
  • velocity measurement

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Multi-point optical measurements of simultaneous vectors in unsteady flow-a review. / Adrian, Ronald.

In: International Journal of Heat and Fluid Flow, Vol. 7, No. 2, 1986, p. 127-145.

Research output: Contribution to journalArticle

@article{60b464a0db56473989ff4cda13231897,
title = "Multi-point optical measurements of simultaneous vectors in unsteady flow-a review",
abstract = "Optical techniques for measuring large numbers of simultaneous velocity vectors in two- and three-dimensional regions of fluid flows are reviewed. These nonobtrusive methods provide spatial information of the type that is available from flow visualization with accuracy approaching that of single-point methods such as laser Doppler velocimetry and hot wire. The principle underlying each technique is the measurement of the simultaneous displacemen of images of many marked fluid particles. Many methods are available. These include streak photography; marker image tracking methods using photography, cinematography, holography, and video recording; line tracking methods using hydrogen bubbles and photochromic tracers; and fluorescent particle tracing. Pulsed laser methods, specifically laser speckle velocimetry and particle image velocimetry, provide high spatial resolution and good accuracy.",
keywords = "optical techniques, turbulent flow, unsteady flow, velocity measurement",
author = "Ronald Adrian",
year = "1986",
doi = "10.1016/0142-727X(86)90062-7",
language = "English (US)",
volume = "7",
pages = "127--145",
journal = "International Journal of Heat and Fluid Flow",
issn = "0142-727X",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Multi-point optical measurements of simultaneous vectors in unsteady flow-a review

AU - Adrian, Ronald

PY - 1986

Y1 - 1986

N2 - Optical techniques for measuring large numbers of simultaneous velocity vectors in two- and three-dimensional regions of fluid flows are reviewed. These nonobtrusive methods provide spatial information of the type that is available from flow visualization with accuracy approaching that of single-point methods such as laser Doppler velocimetry and hot wire. The principle underlying each technique is the measurement of the simultaneous displacemen of images of many marked fluid particles. Many methods are available. These include streak photography; marker image tracking methods using photography, cinematography, holography, and video recording; line tracking methods using hydrogen bubbles and photochromic tracers; and fluorescent particle tracing. Pulsed laser methods, specifically laser speckle velocimetry and particle image velocimetry, provide high spatial resolution and good accuracy.

AB - Optical techniques for measuring large numbers of simultaneous velocity vectors in two- and three-dimensional regions of fluid flows are reviewed. These nonobtrusive methods provide spatial information of the type that is available from flow visualization with accuracy approaching that of single-point methods such as laser Doppler velocimetry and hot wire. The principle underlying each technique is the measurement of the simultaneous displacemen of images of many marked fluid particles. Many methods are available. These include streak photography; marker image tracking methods using photography, cinematography, holography, and video recording; line tracking methods using hydrogen bubbles and photochromic tracers; and fluorescent particle tracing. Pulsed laser methods, specifically laser speckle velocimetry and particle image velocimetry, provide high spatial resolution and good accuracy.

KW - optical techniques

KW - turbulent flow

KW - unsteady flow

KW - velocity measurement

UR - http://www.scopus.com/inward/record.url?scp=0022732547&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022732547&partnerID=8YFLogxK

U2 - 10.1016/0142-727X(86)90062-7

DO - 10.1016/0142-727X(86)90062-7

M3 - Article

VL - 7

SP - 127

EP - 145

JO - International Journal of Heat and Fluid Flow

JF - International Journal of Heat and Fluid Flow

SN - 0142-727X

IS - 2

ER -