High resolution measurement of turbulent structure in a channel with particle image velocimetry

Z. C. Liu; C. C. Landreth; R. J. Adrian; T. J. Hanratty

doi:10.1007/BF00190246

High resolution measurement of turbulent structure in a channel with particle image velocimetry

Z. C. Liu, C. C. Landreth, R. J. Adrian, T. J. Hanratty

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97 Scopus citations

Abstract

High resolution particle image velocimetry is used to measure the turbulent velocity field for fully developed flow (Re = 2,872) in an enclosed channel. Photographs of particle displacement are obtained in a plane that is parallel to the flow and perpendicular to the walls. These are analyzed to give simultaneous measurements of two components of the velocity at more than 10,000 points. Maps of velocity vectors, spanwise vorticity and Reynolds stress reveal structural aspects of the turbulence. In particular, internal shear layers are observed, in agreement with predictions of direct numerical simulation. Ensemble-averaging of a number of photographs yields statistical properties of the velocity in good agreement with laser-Doppler velocimeter measurements, and with direct numerical simulations.

Original language	English (US)
Pages (from-to)	301-312
Number of pages	12
Journal	Experiments in Fluids
Volume	10
Issue number	6
DOIs	https://doi.org/10.1007/BF00190246
State	Published - Mar 1 1991
Externally published	Yes

ASJC Scopus subject areas

Computational Mechanics
Mechanics of Materials
General Physics and Astronomy
Fluid Flow and Transfer Processes

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10.1007/BF00190246

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title = "High resolution measurement of turbulent structure in a channel with particle image velocimetry",

abstract = "High resolution particle image velocimetry is used to measure the turbulent velocity field for fully developed flow (Re = 2,872) in an enclosed channel. Photographs of particle displacement are obtained in a plane that is parallel to the flow and perpendicular to the walls. These are analyzed to give simultaneous measurements of two components of the velocity at more than 10,000 points. Maps of velocity vectors, spanwise vorticity and Reynolds stress reveal structural aspects of the turbulence. In particular, internal shear layers are observed, in agreement with predictions of direct numerical simulation. Ensemble-averaging of a number of photographs yields statistical properties of the velocity in good agreement with laser-Doppler velocimeter measurements, and with direct numerical simulations.",

author = "Liu, {Z. C.} and Landreth, {C. C.} and Adrian, {R. J.} and Hanratty, {T. J.}",

year = "1991",

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AU - Landreth, C. C.

AU - Adrian, R. J.

AU - Hanratty, T. J.

PY - 1991/3/1

Y1 - 1991/3/1

N2 - High resolution particle image velocimetry is used to measure the turbulent velocity field for fully developed flow (Re = 2,872) in an enclosed channel. Photographs of particle displacement are obtained in a plane that is parallel to the flow and perpendicular to the walls. These are analyzed to give simultaneous measurements of two components of the velocity at more than 10,000 points. Maps of velocity vectors, spanwise vorticity and Reynolds stress reveal structural aspects of the turbulence. In particular, internal shear layers are observed, in agreement with predictions of direct numerical simulation. Ensemble-averaging of a number of photographs yields statistical properties of the velocity in good agreement with laser-Doppler velocimeter measurements, and with direct numerical simulations.

AB - High resolution particle image velocimetry is used to measure the turbulent velocity field for fully developed flow (Re = 2,872) in an enclosed channel. Photographs of particle displacement are obtained in a plane that is parallel to the flow and perpendicular to the walls. These are analyzed to give simultaneous measurements of two components of the velocity at more than 10,000 points. Maps of velocity vectors, spanwise vorticity and Reynolds stress reveal structural aspects of the turbulence. In particular, internal shear layers are observed, in agreement with predictions of direct numerical simulation. Ensemble-averaging of a number of photographs yields statistical properties of the velocity in good agreement with laser-Doppler velocimeter measurements, and with direct numerical simulations.

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High resolution measurement of turbulent structure in a channel with particle image velocimetry

Abstract

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