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Thermographic laser Doppler velocimetry

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

Authors

Anthony O. Ojo

Benoit Fond

Berend G. M. Van Wachem

Andrew L. Heyes

Frank Beyrau



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 laser Doppler velocimetry. Flow temperatures are derived using a two-color 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.

Citation

Ojo, A. O., Fond, B., Van Wachem, B. G. M., Heyes, A. L., & Beyrau, F. (2015). Thermographic laser Doppler velocimetry. Optics letters, 40(20), 4759-4762. https://doi.org/10.1364/ol.40.004759

Journal Article Type Article
Acceptance Date Sep 15, 2015
Online Publication Date Oct 13, 2015
Publication Date Oct 15, 2015
Deposit Date Feb 8, 2021
Publicly Available Date Feb 8, 2021
Journal Optics Letters
Print ISSN 0146-9592
Publisher Optica
Peer Reviewed Peer Reviewed
Volume 40
Issue 20
Pages 4759-4762
DOI https://doi.org/10.1364/ol.40.004759
Keywords Combustion diagnostics; Remote sensing and sensors; Flow diagnostics; Laser Doppler velocimetry; Temperature; Fluorescent and luminescent materials
Public URL https://hull-repository.worktribe.com/output/3713554
Publisher URL https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-40-20-4759&id=330601
Related Public URLs https://strathprints.strath.ac.uk/54715/

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Copyright Statement
© 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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