High-temperature measurements of methane and acetylene using quantum cascade laser absorption near 8μm

Handle URI:
http://hdl.handle.net/10754/575732
Title:
High-temperature measurements of methane and acetylene using quantum cascade laser absorption near 8μm
Authors:
Sajid, M.B.; Javed, Tamour ( 0000-0002-3328-9061 ) ; Farooq, Aamir ( 0000-0001-5296-2197 )
Abstract:
The mid-infrared wavelength region near 8 mu m contains absorption bands of several molecules such as water vapor, hydrogen peroxide, nitrous oxide, methane and acetylene. A new laser absorption sensor based on the v(4) band of methane and the v(4)+v(5) band of acetylene is reported for interference-free, time-resolved measurements under combustion-relevant conditions. A detailed line-selection procedure was used to identify optimum transitions. Methane and acetylene were measured at the line centers of Q12 (1303.5 cm(-1)) and P23 (1275.5 cm(-1)) transitions, respectively. High-temperature absorption cross sections of methane and acetylene were measured at peaks (on-line) and valleys (off-line) of the selected absorption transitions. The differential absorption strategy was employed to eliminate interference absorption from large hydrocarbons. Experiments were performed behind reflected shock waves over a temperature range of 1200-2200 K, between pressures of 1-4 atm. The diagnostics were then applied to measure the respective species time-history profiles during the shock-heated pyrolysis of n-pentane. (C) 2015 Elsevier Ltd. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center; Mechanical Engineering Program; Chemical Kinetics & Laser Sensors Laboratory
Publisher:
Elsevier BV
Journal:
Journal of Quantitative Spectroscopy and Radiative Transfer
Issue Date:
Apr-2015
DOI:
10.1016/j.jqsrt.2015.01.009
Type:
Article
ISSN:
0022-4073
Sponsors:
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) and by Saudi Aramco under the FUELCOM Program.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorSajid, M.B.en
dc.contributor.authorJaved, Tamouren
dc.contributor.authorFarooq, Aamiren
dc.date.accessioned2015-08-24T08:36:47Zen
dc.date.available2015-08-24T08:36:47Zen
dc.date.issued2015-04en
dc.identifier.issn0022-4073en
dc.identifier.doi10.1016/j.jqsrt.2015.01.009en
dc.identifier.urihttp://hdl.handle.net/10754/575732en
dc.description.abstractThe mid-infrared wavelength region near 8 mu m contains absorption bands of several molecules such as water vapor, hydrogen peroxide, nitrous oxide, methane and acetylene. A new laser absorption sensor based on the v(4) band of methane and the v(4)+v(5) band of acetylene is reported for interference-free, time-resolved measurements under combustion-relevant conditions. A detailed line-selection procedure was used to identify optimum transitions. Methane and acetylene were measured at the line centers of Q12 (1303.5 cm(-1)) and P23 (1275.5 cm(-1)) transitions, respectively. High-temperature absorption cross sections of methane and acetylene were measured at peaks (on-line) and valleys (off-line) of the selected absorption transitions. The differential absorption strategy was employed to eliminate interference absorption from large hydrocarbons. Experiments were performed behind reflected shock waves over a temperature range of 1200-2200 K, between pressures of 1-4 atm. The diagnostics were then applied to measure the respective species time-history profiles during the shock-heated pyrolysis of n-pentane. (C) 2015 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) and by Saudi Aramco under the FUELCOM Program.en
dc.publisherElsevier BVen
dc.titleHigh-temperature measurements of methane and acetylene using quantum cascade laser absorption near 8μmen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentChemical Kinetics & Laser Sensors Laboratoryen
dc.identifier.journalJournal of Quantitative Spectroscopy and Radiative Transferen
kaust.authorFarooq, Aamiren
kaust.authorSajid, Muhammad Bilalen
kaust.authorJaved, Tamouren
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