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dc.contributor.authorKrishna, Yedhu
dc.contributor.authorMahuthannan, Ariff Magdoom
dc.contributor.authorLuo, Xinguang
dc.contributor.authorLacoste, Deanna
dc.contributor.authorMagnotti, Gaetano
dc.date.accessioned2020-11-22T12:17:55Z
dc.date.available2020-11-22T12:17:55Z
dc.date.issued2020-11-20
dc.date.submitted2020-08-10
dc.identifier.citationKrishna, Y., Mahuthannan, A. M., Luo, X., Lacoste, D. A., & Magnotti, G. (2021). High-speed filtered Rayleigh scattering thermometry in premixed flames through narrow channels. Combustion and Flame, 225, 329–339. doi:10.1016/j.combustflame.2020.10.053
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2020.10.053
dc.identifier.urihttp://hdl.handle.net/10754/666064
dc.description.abstractHigh-speed filtered Rayleigh scattering at 10 kHz repetition rate for time-resolved temperature measurements in premixed flames propagating in mm-high channels is demonstrated for the first time. The instrument relies on a pulse burst laser with a 200 ns temporal width, and a CCD camera operated in subframe burst gate mode to achieve high signal to noise ratio despite the limited optical access. A 10-inch-long iodine cell acts as a molecular filter and the laser, which is seeded using an external cavity diode laser and operated in a temporally stretched mode, is wavelength-tuned to the peak of a strong iodine absorption line. A CCD camera, operated in the sub-frame burst gating mode with the help of an external slit configuration, is used as the detector to achieve improved camera noise performance. Filtered Rayleigh scattering temperature measurements in premixed flat flames stabilized over a McKenna burner indicate an instrument precision of 3%. Temperature measurements in the products region are within 3% of measurements obtained with conventional Rayleigh scattering. The system's capabilities are demonstrated through time-resolved temperature measurements in a premixed methane-air flame propagating in a 1.5 mm-high rectangular channel designed to study flame quenching in flame arrestors. Surface scattering from the optical windows and the channel surfaces is successfully suppressed and time-resolved temperature profiles are obtained for both quenching and no-quenching events.
dc.description.sponsorshipThe research reported in this publication was funded by King Abdullah University of Science and Technology.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S001021802030479X
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [225, , (2020-11-20)] DOI: 10.1016/j.combustflame.2020.10.053 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleHigh-speed filtered Rayleigh scattering thermometry in premixed flames through narrow channels
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentMechanical Engineering
dc.identifier.journalCombustion and Flame
dc.rights.embargodate2022-11-20
dc.eprint.versionPost-print
dc.identifier.volume225
dc.identifier.pages329-339
kaust.personKrishna, Yedhu
kaust.personMahuthannan, Ariff Magdoom
kaust.personLuo, Xinguang
kaust.personLacoste, Deanna
kaust.personMagnotti, Gaetano
dc.date.accepted2020-10-28
refterms.dateFOA2020-11-23T11:17:54Z


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