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

R. J. Adrian

doi:10.1016/0142-727X(86)90062-7

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

R. J. Adrian

Research output: Contribution to journal › Article › peer-review

235 Scopus citations

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 language	English (US)
Pages (from-to)	127-145
Number of pages	19
Journal	International Journal of Heat and Fluid Flow
Volume	7
Issue number	2
DOIs	https://doi.org/10.1016/0142-727X(86)90062-7
State	Published - Jun 1986
Externally published	Yes

Keywords

optical techniques
turbulent flow
unsteady flow
velocity measurement

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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

Cite this

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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 = "Adrian, {R. J.}",

note = "Funding Information: This material is based on work supported by the National Science Foundation under grant ATM 820-3521.",

year = "1986",

month = jun,

doi = "10.1016/0142-727X(86)90062-7",

language = "English (US)",

volume = "7",

pages = "127--145",

journal = "International Journal of Heat and Fluid Flow",

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AU - Adrian, R. J.

N1 - Funding Information: This material is based on work supported by the National Science Foundation under grant ATM 820-3521.

PY - 1986/6

Y1 - 1986/6

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

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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