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

Owen Williams; Tyler Van Buren; Alexander J. 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 J. Smits

Mechanical & Aerospace Engineering

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

5 Scopus citations

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 (US)
Article number	142
Journal	Experiments in Fluids
Volume	56
Issue number	7
DOIs	https://doi.org/10.1007/s00348-015-2008-5
State	Published - Jul 27 2015

All Science Journal Classification (ASJC) codes

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

Keywords

Cold-wires
NSTAP
PIV
Turbulent Prandtl number
Turbulent heat flux

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10.1007/s00348-015-2008-5

Cite this

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

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{\textquoteright}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.",

keywords = "Cold-wires, NSTAP, PIV, Turbulent Prandtl number, Turbulent heat flux",

author = "Owen Williams and {Van Buren}, Tyler and Smits, {Alexander J.}",

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year = "2015",

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T1 - A new method for measuring turbulent heat fluxes using PIV and fast-response cold-wires

AU - Williams, Owen

AU - Van Buren, Tyler

AU - Smits, Alexander J.

PY - 2015/7/27

Y1 - 2015/7/27

N2 - 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.

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 - Cold-wires

KW - NSTAP

KW - PIV

KW - Turbulent Prandtl number

KW - Turbulent heat flux

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M3 - Article

AN - SCOPUS:84932624785

SN - 0723-4864

VL - 56

JO - Experiments in Fluids

JF - Experiments in Fluids

IS - 7

M1 - 142

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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