Show simple item record

dc.contributor.authorNasir, Ehson Fawad
dc.contributor.authorFarooq, Aamir
dc.date.accessioned2016-11-03T13:24:28Z
dc.date.available2016-11-03T13:24:28Z
dc.date.issued2016-07-16
dc.identifier.citationNasir EF, Farooq A (2016) Time-resolved temperature measurements in a rapid compression machine using quantum cascade laser absorption in the intrapulse mode. Proceedings of the Combustion Institute. Available: http://dx.doi.org/10.1016/j.proci.2016.07.010.
dc.identifier.issn1540-7489
dc.identifier.doi10.1016/j.proci.2016.07.010
dc.identifier.urihttp://hdl.handle.net/10754/621766
dc.description.abstractA temperature sensor based on the intrapulse absorption spectroscopy technique has been developed to measure in situ temperature time-histories in a rapid compression machine (RCM). Two quantum-cascade lasers (QCLs) emitting near 4.55μm and 4.89μm were operated in pulsed mode, causing a frequency "down-chirp" across two ro-vibrational transitions of carbon monoxide. The down-chirp phenomenon resulted in large spectral tuning (δν ∼2.8cm-1) within a single pulse of each laser at a high pulse repetition frequency (100kHz). The wide tuning range allowed the application of the two-line thermometry technique, thus making the sensor quantitative and calibration-free. The sensor was first tested in non-reactive CO-N2 gas mixtures in the RCM and then applied to cases of n-pentane oxidation. Experiments were carried out for end of compression (EOC) pressures and temperatures ranging 9.21-15.32bar and 745-827K, respectively. Measured EOC temperatures agreed with isentropic calculations within 5%. Temperature rise measured during the first-stage ignition of n-pentane is over-predicted by zero-dimensional kinetic simulations. This work presents, for the first time, highly time-resolved temperature measurements in reactive and non-reactive rapid compression machine experiments. © 2016 Elsevier Ltd.
dc.description.sponsorshipClean Combustion Research Center
dc.publisherElsevier BV
dc.subjectAbsorption spectroscopy
dc.titleTime-resolved temperature measurements in a rapid compression machine using quantum cascade laser absorption in the intrapulse mode
dc.typeArticle
dc.contributor.departmentChemical Kinetics & Laser Sensors Laboratory
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalProceedings of the Combustion Institute
kaust.personNasir, Ehson Fawad
kaust.personFarooq, Aamir
dc.date.published-online2016-07-16
dc.date.published-print2017


This item appears in the following Collection(s)

Show simple item record