Emmert, Johannes ; Baroncelli, Martina ; Kley, Sani van der ; Pitsch, Heinz ; Wagner, Steven (2019)
Axisymmetric linear hyperspectral absorption spectroscopy and residuum-based parameter selection on a counter flow burner.
In: Energies, 12 (14)
doi: 10.3390/en12142786
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Chemical species tomography enables non-invasive measurements of temperatures and concentrations in gas phase processes. In this work, we demonstrate the recently introduced linear hyperspectral absorption tomography (LHAT) on an axisymmetric counterflow burner used for speciation studies of Oxyfuel combustion. As LHAT reconstructs spectrally resolved local absorption coefficient spectra, the physical plausibility of these reconstructed spectra degrades with an over-regularization of the tomographic problem. As presented in this work, this behavior can be employed in a novel regularization parameter choice method based on the residuals of local spectroscopic fits to the reconstructed spectra. After determining the regularization parameter, the reconstructions of the temperature and water mole fraction profiles of different flames are compared to numerical simulations, showing a good agreement.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Emmert, Johannes ; Baroncelli, Martina ; Kley, Sani van der ; Pitsch, Heinz ; Wagner, Steven |
| Art des Eintrags: | Bibliographie |
| Titel: | Axisymmetric linear hyperspectral absorption spectroscopy and residuum-based parameter selection on a counter flow burner |
| Sprache: | Englisch |
| Publikationsjahr: | 2019 |
| Ort: | Basel |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Energies |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| (Heft-)Nummer: | 14 |
| Kollation: | 12 Seiten |
| DOI: | 10.3390/en12142786 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Chemical species tomography enables non-invasive measurements of temperatures and concentrations in gas phase processes. In this work, we demonstrate the recently introduced linear hyperspectral absorption tomography (LHAT) on an axisymmetric counterflow burner used for speciation studies of Oxyfuel combustion. As LHAT reconstructs spectrally resolved local absorption coefficient spectra, the physical plausibility of these reconstructed spectra degrades with an over-regularization of the tomographic problem. As presented in this work, this behavior can be employed in a novel regularization parameter choice method based on the residuals of local spectroscopic fits to the reconstructed spectra. After determining the regularization parameter, the reconstructions of the temperature and water mole fraction profiles of different flames are compared to numerical simulations, showing a good agreement. |
| Freie Schlagworte: | tomography, parameter selection, absorption spectroscopy, tunable diode laser, Oxyfuel |
| Zusätzliche Informationen: | This article belongs to the Special Issue Tomographic and Volumetric Diagnostics in Flames |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Reaktive Strömungen und Messtechnik (RSM) |
| Hinterlegungsdatum: | 22 Jan 2024 09:18 |
| Letzte Änderung: | 22 Jan 2024 09:18 |
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Verfügbare Versionen dieses Eintrags
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Axisymmetric Linear Hyperspectral Absorption Spectroscopy and Residuum-Based Parameter Selection on a Counter Flow Burner. (deposited 19 Jan 2024 14:27)
- Axisymmetric linear hyperspectral absorption spectroscopy and residuum-based parameter selection on a counter flow burner. (deposited 22 Jan 2024 09:18) [Gegenwärtig angezeigt]
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