Show simple item record

dc.contributor.authorRojas Chavez, Samir B.
dc.contributor.authorChatelain, Karl P.
dc.contributor.authorGuiberti, Thibault
dc.contributor.authorMével, Rémy
dc.contributor.authorLacoste, Deanna
dc.date.accessioned2021-03-01T05:39:52Z
dc.date.available2021-03-01T05:39:52Z
dc.date.issued2021-03-19
dc.identifier.citationRojas Chavez, S. B., Chatelain, K. P., Guiberti, T. F., Mével, R., & Lacoste, D. A. (2021). Effect of the excitation line on hydroxyl radical imaging by laser induced fluorescence in hydrogen detonations. Combustion and Flame, 229, 111399. doi:10.1016/j.combustflame.2021.111399
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2021.111399
dc.identifier.urihttp://hdl.handle.net/10754/667722
dc.description.abstractThe present study aims to evidence the effect of the excitation line on the planar laser-induced fluorescence of hydroxyl radical (OH-PLIF) imaging in H-fueled detonation wave. We experimentally validated an updated laser-induced fluorescence (LIF) model, called KAT-LIF, which simulates spectrally-resolved fluorescence spectra, using a recently developed optical detonation duct. We numerically investigated the effects of the excitation line, the initial pressure (20–100 kPa), and the diluent (N/Ar) on the fluorescence spectrum, the spectrally- and one-dimensionally-averaged LIF intensity, and the quantitative capabilities of the OH-LIF measurements for different 2H-O-3.76diluent detonable mixtures. The investigated excitation lines were (0,0)Q1(7), both (1,0)Q2(8) and (1,0)Q1(9), and (1,0)Q1(6), which all belong to the transition. The main findings are the following: (i) considering the commercially available OH filters, Q2(8)+Q1(9) excitation scheme has the highest LIF intensity for all the investigated H-fueled detonations, while Q1(7) could provide the strongest intensity with better (custom) collection optics; (ii) the maximum LIF intensity decreases with increasing pressure for all the excitation schemes; (iii) using a single point calibration, at the fluorescence peak, it is not possible to perform quantitative measurements of OH radicals for any H-fueled detonation, using the conventional excitation schemes. Finally, we experimentally evidenced more favorable excitation schemes to obtain qualitative information far behind the front, by employing the saturated regime of fluorescence or the optically thin linear regime with appropriate laser configuration. These two excitation schemes correspond to more appropriate LIF strategies that will enable better detonation flow visualization in future studies.
dc.description.sponsorshipThis work was funded by the King Abdullah University of Science and Technology through the baseline funding (BAS/1/1396-01-01).
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0010218021001267
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, [229, , (2021-03-19)] DOI: 10.1016/j.combustflame.2021.111399 . © 2021. 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.titleEffect of the excitation line on hydroxyl radical imaging by laser induced fluorescence in hydrogen detonations
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCombustion and Flame
dc.rights.embargodate2023-03-19
dc.eprint.versionPost-print
dc.contributor.institutionCenter for Combustion Energy, Tsinghua University, Beijing, China
dc.contributor.institutionSchool of Vehicle and Mobility, Tsinghua University, Beijing, China
dc.identifier.volume229
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
dc.identifier.pages111399
pubs.publication-statusAccepted
kaust.personRojas Chavez, Samir B.
kaust.personChatelain, Karl P.
kaust.personGuiberti, Thibault
kaust.personLacoste, Deanna
kaust.grant.numberBAS/1/1396-01-01
dc.date.published-online2021-03-19
dc.date.published-print2021-07


Files in this item

Thumbnail
Name:
RojasChavez_2021_CnF_Preprint.pdf
Size:
10.71Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2023-03-19

This item appears in the following Collection(s)

Show simple item record