A new method for measuring turbulent heat fluxes using PIV and fast-response cold-wires

Owen Williams; Tyler Van Buren; Alexander Smits

doi:10.1007/s00348-015-2008-5

A new method for measuring turbulent heat fluxes using PIV and fast-response cold-wires

Owen Williams, Tyler Van Buren, Alexander Smits

Mechanical & Aerospace Engineering

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

6 Citations (Scopus)

Abstract

A new method for measuring turbulent heat fluxes using a combination of particle image velocimetry and a nanoscale fast-response cold-wire is tested by examining a rough-wall turbulent boundary layer subject to weakly stable stratification. The method has the advantages of simple calibration and setup, as well as providing spatial correlations of velocity and temperature and their associated integral length scales. The accuracy of using Taylor?s hypothesis when employing a large field of view is investigated. Heat flux, velocity?temperature correlation coefficients and turbulent Prandtl number profiles, as well as spatial velocity and temperature correlations, are presented.

Original language	English
Pages (from-to)	1 - 10
Number of pages	10
Journal	Experiments in Fluids
Volume	56
Issue number	7
DOIs	https://doi.org/10.1007/s00348-015-2008-5
Publication status	Published - 27 Jul 2015

Keywords

Turbulent heat flux
PIV
Cold-wires
NSTAP
Turbulent prandtl number

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10.1007/s00348-015-2008-5

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abstract = "A new method for measuring turbulent heat fluxes using a combination of particle image velocimetry and a nanoscale fast-response cold-wire is tested by examining a rough-wall turbulent boundary layer subject to weakly stable stratification. The method has the advantages of simple calibration and setup, as well as providing spatial correlations of velocity and temperature and their associated integral length scales. The accuracy of using Taylor?s hypothesis when employing a large field of view is investigated. Heat flux, velocity?temperature correlation coefficients and turbulent Prandtl number profiles, as well as spatial velocity and temperature correlations, are presented.",

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AU - Van Buren, Tyler

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AB - A new method for measuring turbulent heat fluxes using a combination of particle image velocimetry and a nanoscale fast-response cold-wire is tested by examining a rough-wall turbulent boundary layer subject to weakly stable stratification. The method has the advantages of simple calibration and setup, as well as providing spatial correlations of velocity and temperature and their associated integral length scales. The accuracy of using Taylor?s hypothesis when employing a large field of view is investigated. Heat flux, velocity?temperature correlation coefficients and turbulent Prandtl number profiles, as well as spatial velocity and temperature correlations, are presented.

KW - Turbulent heat flux

KW - PIV

KW - Cold-wires

KW - NSTAP

KW - Turbulent prandtl number

UR - http://goo.gl/eDNVQS

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DO - 10.1007/s00348-015-2008-5

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SP - 1

EP - 10

JO - Experiments in Fluids

JF - Experiments in Fluids

IS - 7

ER -

A new method for measuring turbulent heat fluxes using PIV and fast-response cold-wires

Abstract

Keywords

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