Emmert, Johannes ; Schneider, Henrik ; Meißner, Christian ; Sidiropoulos, Evaggelos ; Hölzer, Jonas I. ; Seeger, Thomas ; Böhm, Benjamin ; Dreizler, Andreas ; Wagner, Steven (2021)
Characterization of temperature distributions in a swirled oxy-fuel coal combustor using tomographic absorption spectroscopy with fluctuation modelling.
In: Applications in Energy and Combustion Science, 6
doi: 10.1016/j.jaecs.2021.100025
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Oxy-fuel combustion promises efficient and inexpensive carbon dioxide sequestration and is therefore subject to active experimental research. However, the transfer of mature, non-intrusive diagnostic methods for temperature measurement like Coherent Anti-Stokes Raman Spectroscopy (CARS) from air-fed to oxy-fuel systems is challenging due to the deficiency in diatomic species suitable for thermometry. Although not limited to oxy-fuel atmospheres, we demonstrate the application of linear hyperspectral absorption tomography on water vapor in a swirled oxy-fuel coal combustor as a complementary diagnostic method, supplementing reference and validation data sets. Due to the burner design an axisymmetric reconstruction of the time-averaged temperature field is conducted. To compensate the temperature bias expected when evaluating time-averaged spectroscopic data we incorporate turbulent temperature fluctuations into our spectroscopic model, providing a fluctuation measure in addition to mean temperatures. The results quantitatively agree with vibrational O2-CARS measurements and qualitatively recreate spatial structures known from particle image velocimetry (PIV) flow fields.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Emmert, Johannes ; Schneider, Henrik ; Meißner, Christian ; Sidiropoulos, Evaggelos ; Hölzer, Jonas I. ; Seeger, Thomas ; Böhm, Benjamin ; Dreizler, Andreas ; Wagner, Steven |
| Art des Eintrags: | Bibliographie |
| Titel: | Characterization of temperature distributions in a swirled oxy-fuel coal combustor using tomographic absorption spectroscopy with fluctuation modelling |
| Sprache: | Englisch |
| Publikationsjahr: | 3 April 2021 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applications in Energy and Combustion Science |
| Jahrgang/Volume einer Zeitschrift: | 6 |
| DOI: | 10.1016/j.jaecs.2021.100025 |
| URL / URN: | https://www.sciencedirect.com/science/article/pii/S2666352X2... |
| Kurzbeschreibung (Abstract): | Oxy-fuel combustion promises efficient and inexpensive carbon dioxide sequestration and is therefore subject to active experimental research. However, the transfer of mature, non-intrusive diagnostic methods for temperature measurement like Coherent Anti-Stokes Raman Spectroscopy (CARS) from air-fed to oxy-fuel systems is challenging due to the deficiency in diatomic species suitable for thermometry. Although not limited to oxy-fuel atmospheres, we demonstrate the application of linear hyperspectral absorption tomography on water vapor in a swirled oxy-fuel coal combustor as a complementary diagnostic method, supplementing reference and validation data sets. Due to the burner design an axisymmetric reconstruction of the time-averaged temperature field is conducted. To compensate the temperature bias expected when evaluating time-averaged spectroscopic data we incorporate turbulent temperature fluctuations into our spectroscopic model, providing a fluctuation measure in addition to mean temperatures. The results quantitatively agree with vibrational O2-CARS measurements and qualitatively recreate spatial structures known from particle image velocimetry (PIV) flow fields. |
| Freie Schlagworte: | Absorption spectroscopy, Tomography, Oxy-fuel, Multiphase |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Reaktive Strömungen und Messtechnik (RSM) |
| TU-Projekte: | DFG|TRR129|TP B04 Prof. Dreizle DFG|TRR129|TP B05 Prof. Dreizle |
| Hinterlegungsdatum: | 27 Okt 2021 07:23 |
| Letzte Änderung: | 02 Feb 2023 10:28 |
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