2020
DOI: 10.1016/j.jqsrt.2020.107257
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The accuracy and precision of multi-line NO-LIF thermometry in a wide range of pressures and temperatures

Abstract: An automated spectral fitting algorithm (named Thermo NO-LIF) designed for the extraction of temperature information from experimental NO-LIF spectra is presented and analysed. With the aid of the Thermo NO-LIF, the high-accuracy (0.5%) of multi-line NO-LIF thermometry are demonstrated in the burnt-gases region of a near-adiabatic Bunsentype premixed flame. The results are compared with the temperature measured using N 2 spontaneous Raman scattering (SRS). The current study also applies and analyses the algori… Show more

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Cited by 16 publications
(10 citation statements)
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“…The temperature profile of the flame was obtained in situ by NO LIF thermometry (without a microprobe). In the present work, the temperature profile in flame F2 is measured following our recent work, , while the previous measurements are used in flame F1 . The temperature determination is described in section , and the profiles are presented in section .…”
Section: Methodsmentioning
confidence: 99%
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“…The temperature profile of the flame was obtained in situ by NO LIF thermometry (without a microprobe). In the present work, the temperature profile in flame F2 is measured following our recent work, , while the previous measurements are used in flame F1 . The temperature determination is described in section , and the profiles are presented in section .…”
Section: Methodsmentioning
confidence: 99%
“…The excitation fluorescence spectra collected at different HAB are compared to synthetic spectra to determine the temperature of the gases according to the Boltzmann distribution. More details about the method are given in refs. and .…”
Section: Methodsmentioning
confidence: 99%
“…Flame temperatures were measured using a combination of NO laser-induced fluorescence (LIF) thermometry and a thermocouple without the sampling probe. The details of this technique are available in ref . A small amount of NO (120 ppm in volume fraction) was added to the nitrogen diluent.…”
Section: Experimental and Modeling Methodsmentioning
confidence: 99%
“…The LIF signal was then collected in the A–X­(0,2) band of NO using a spectrometer centered at 245 nm. Temperatures were determined through fitting synthetic LIF excitation spectra to the experimental spectra using an automated spectral fitting algorithm named “Thermo NO-LIF”, , with an estimated error ±100 K in the burned-gas zone. Temperature profiles were complemented by temperatures close to the burner surface (0.25–2 mm above the burner) measured using a commercial K-type thermocouple (250 μm diameter, TC Direct) with ∼1% error.…”
Section: Experimental and Modeling Methodsmentioning
confidence: 99%
“…LIF, where spontaneous emission from the species under study is detected upon excitation by laser radiation, is rightfully considered to be the workhorse of combustion diagnostics, and combustion-based nanomaterial synthesis, including the synthesis of iron oxide, is not an exception. ,,,, LIF provides high sensitivity, selectivity, and spatial resolution across the probe volume, allowing for imaging of the flame structure in complex synthesis reactor configurations. An illustrative example is shown in Figure b depicting application of planar LIF (PLIF) to imaging of a flame structure in a pilot-plant flame synthesis reactor with respect to Fe atom concentrations and temperature field, used by Feroughi et al…”
Section: Laser Spectroscopy and Mass Spectrometry Methods For Elucida...mentioning
confidence: 99%