Thermographic laser Doppler velocimetry

Anthony O. Ojo; Benoit Fond; Berend G. M. Van Wachem; Andrew L. Heyes; Frank Beyrau

doi:10.1364/ol.40.004759

Thermographic laser Doppler velocimetry

Anthony O. Ojo, Benoit Fond, Berend G. M. Van Wachem, Andrew L. Heyes, Frank Beyrau

Mechanical And Aerospace Engineering

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17 Citations (Scopus)

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Abstract

We propose a point-measurement technique for simultaneous gas temperature and velocity measurement based on thermographic phosphor particles dispersed in the fluid. The flow velocity is determined from the frequency of light scattered by BaMgAl10O17:Eu2+ phosphor particles traversing the fringes like in conventional LDV. Flow temperatures are derived using a two-colour ratio method applied to the phosphorescence from the same particles. This combined diagnostic technique is demonstrated with a temperature precision of 4-10% in a heated air jet during steady operation for flow temperatures up to 624 K. The technique provides correlated vector-scalar data at high spatial and temporal resolution.

Original language	English
Pages (from-to)	4759-4762
Number of pages	5
Journal	Optics Letters
Volume	40
Issue number	20
Early online date	18 Sep 2015
DOIs	https://doi.org/10.1364/ol.40.004759
Publication status	Published - 13 Oct 2015

Keywords

gas analysis
phosphor
flow dynamics

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10.1364/ol.40.004759

Ojo-etal-OpticsLetters-2015-Thermographic-laser-doppler-velocimetryAccepted author manuscript, 710 KB

17 Citations
1 Article

Thermographic laser Doppler velocimetry using the phase-shifted luminescence of BAM:Eu²⁺ phosphor particles for thermometry
Ojo, A. O., Fond, B., Abram, C., Van Wachem, B. G. M., Heyes, A. L. & Beyrau, F., 15 May 2017, In: Optics Express. 25, 10, p. 11833-11843 11 p.
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22 Citations (Scopus)

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Cite this

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title = "Thermographic laser Doppler velocimetry",

abstract = "We propose a point-measurement technique for simultaneous gas temperature and velocity measurement based on thermographic phosphor particles dispersed in the fluid. The flow velocity is determined from the frequency of light scattered by BaMgAl10O17:Eu2+ phosphor particles traversing the fringes like in conventional LDV. Flow temperatures are derived using a two-colour ratio method applied to the phosphorescence from the same particles. This combined diagnostic technique is demonstrated with a temperature precision of 4-10% in a heated air jet during steady operation for flow temperatures up to 624 K. The technique provides correlated vector-scalar data at high spatial and temporal resolution. ",

keywords = "gas analysis, phosphor, flow dynamics",

author = "Ojo, {Anthony O.} and Benoit Fond and {Van Wachem}, {Berend G. M.} and Heyes, {Andrew L.} and Frank Beyrau",

note = "{\textcopyright} 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.",

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T1 - Thermographic laser Doppler velocimetry

AU - Ojo, Anthony O.

AU - Fond, Benoit

AU - Van Wachem, Berend G. M.

AU - Heyes, Andrew L.

AU - Beyrau, Frank

N1 - © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

PY - 2015/10/13

Y1 - 2015/10/13

N2 - We propose a point-measurement technique for simultaneous gas temperature and velocity measurement based on thermographic phosphor particles dispersed in the fluid. The flow velocity is determined from the frequency of light scattered by BaMgAl10O17:Eu2+ phosphor particles traversing the fringes like in conventional LDV. Flow temperatures are derived using a two-colour ratio method applied to the phosphorescence from the same particles. This combined diagnostic technique is demonstrated with a temperature precision of 4-10% in a heated air jet during steady operation for flow temperatures up to 624 K. The technique provides correlated vector-scalar data at high spatial and temporal resolution.

AB - We propose a point-measurement technique for simultaneous gas temperature and velocity measurement based on thermographic phosphor particles dispersed in the fluid. The flow velocity is determined from the frequency of light scattered by BaMgAl10O17:Eu2+ phosphor particles traversing the fringes like in conventional LDV. Flow temperatures are derived using a two-colour ratio method applied to the phosphorescence from the same particles. This combined diagnostic technique is demonstrated with a temperature precision of 4-10% in a heated air jet during steady operation for flow temperatures up to 624 K. The technique provides correlated vector-scalar data at high spatial and temporal resolution.

KW - gas analysis

KW - phosphor

KW - flow dynamics

U2 - 10.1364/ol.40.004759

DO - 10.1364/ol.40.004759

M3 - Article

VL - 40

SP - 4759

EP - 4762

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 20

ER -

Thermographic laser Doppler velocimetry

Abstract

Keywords

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Research output

Thermographic laser Doppler velocimetry using the phase-shifted luminescence of BAM:Eu2+ phosphor particles for thermometry

Cite this

Thermographic laser Doppler velocimetry using the phase-shifted luminescence of BAM:Eu²⁺ phosphor particles for thermometry