Thermographic laser Doppler velocimetry

Ojo, Anthony O. and Fond, Benoit and Van Wachem, Berend G. M. and Heyes, Andrew L. and Beyrau, Frank (2015) Thermographic laser Doppler velocimetry. Optics Letters, 40 (20). pp. 4759-4762. ISSN 0146-9592 (https://doi.org/10.1364/ol.40.004759)

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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.

ORCID iDs

Ojo, Anthony O., Fond, Benoit, Van Wachem, Berend G. M., Heyes, Andrew L. ORCID logoORCID: https://orcid.org/0000-0001-9842-7835 and Beyrau, Frank;
  • Item type:Article
    ID code:54715
    Dates:
    Date
    Event
    13 October 2015
    Published
    18 September 2015
    Published Online
    15 September 2015
    Accepted
    Notes:© 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.
    Keywords:gas analysis, phosphor, flow dynamics, Mechanical engineering and machinery, Plasma physics. Ionized gases, Mechanical Engineering, Atomic and Molecular Physics, and Optics
    Subjects:Technology > Mechanical engineering and machinery
    Science > Physics > Plasma physics. Ionized gases
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Depositing user: Pure Administrator
    Date deposited:11 Dec 2015 01:18
    Last modified:19 Apr 2022 01:20
    URI:https://strathprints.strath.ac.uk/id/eprint/54715
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