Schmitz, R. ; Sirignano, M. ; Hasse, C. ; Ferraro, F. (2021)
Numerical Investigation on the Effect of the Oxymethylene Ether-3 (OME3) Blending Ratio in Premixed Sooting Ethylene Flames.
In: Frontiers in Mechanical Engineering, 7
doi: 10.3389/fmech.2021.744172
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Synthetic fuels, especially oxygenated fuels, which can be used as blending components, make it possible to modify the emission properties of conventional fossil fuels. Among oxygenated fuels, one promising candidate is oxymethylene ether-3 (OME<sub>3</sub>). In this work, the sooting propensity of ethylene (C<sub>2</sub>H<sub>4</sub>) blended with OME<sub>3</sub> is numerically investigated on a series of laminar burner-stabilized premixed flames with increasing amounts of OME<sub>3</sub>, from pure ethylene to pure OME<sub>3</sub>. The numerical analysis is performed using the Conditional Quadrature Method of Moments combined with a detailed physico-chemical soot model. Two different equivalence ratios corresponding to a lightly and a highly sooting flame condition have been investigated. The study examines how different blending ratios of the two fuels affect soot particle formation and a correlation between OME<sub>3</sub> blending ratio and corresponding soot reduction is established. The soot precursor species in the gas-phase are analyzed along with the soot volume fraction of small nanoparticles and large aggregates. Furthermore, the influence of the OME<sub>3</sub> blending on the particle size distribution is studied applying the entropy maximization concept. The effect of increasing amounts of OME<sub>3</sub> is found to be different for soot nanoparticles and larger aggregates. While OME<sub>3</sub> blending significantly reduces the amount of larger aggregates, only large amounts of OME<sub>3</sub>, close to pure OME<sub>3</sub>, lead to a considerable suppression of nanoparticles formed throughout the flame. A linear correlation is identified between the OME<sub>3</sub> content in the fuel and the reduction in the soot volume fraction of larger aggregates, while smaller blending ratios may lead to an increased number of nanoparticles for some positions in the flame for the richer flame condition.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Schmitz, R. ; Sirignano, M. ; Hasse, C. ; Ferraro, F. |
| Art des Eintrags: | Bibliographie |
| Titel: | Numerical Investigation on the Effect of the Oxymethylene Ether-3 (OME3) Blending Ratio in Premixed Sooting Ethylene Flames |
| Sprache: | Englisch |
| Publikationsjahr: | 27 August 2021 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Frontiers in Mechanical Engineering |
| Jahrgang/Volume einer Zeitschrift: | 7 |
| DOI: | 10.3389/fmech.2021.744172 |
| URL / URN: | https://doi.org/10.3389/fmech.2021.744172 |
| Kurzbeschreibung (Abstract): | Synthetic fuels, especially oxygenated fuels, which can be used as blending components, make it possible to modify the emission properties of conventional fossil fuels. Among oxygenated fuels, one promising candidate is oxymethylene ether-3 (OME<sub>3</sub>). In this work, the sooting propensity of ethylene (C<sub>2</sub>H<sub>4</sub>) blended with OME<sub>3</sub> is numerically investigated on a series of laminar burner-stabilized premixed flames with increasing amounts of OME<sub>3</sub>, from pure ethylene to pure OME<sub>3</sub>. The numerical analysis is performed using the Conditional Quadrature Method of Moments combined with a detailed physico-chemical soot model. Two different equivalence ratios corresponding to a lightly and a highly sooting flame condition have been investigated. The study examines how different blending ratios of the two fuels affect soot particle formation and a correlation between OME<sub>3</sub> blending ratio and corresponding soot reduction is established. The soot precursor species in the gas-phase are analyzed along with the soot volume fraction of small nanoparticles and large aggregates. Furthermore, the influence of the OME<sub>3</sub> blending on the particle size distribution is studied applying the entropy maximization concept. The effect of increasing amounts of OME<sub>3</sub> is found to be different for soot nanoparticles and larger aggregates. While OME<sub>3</sub> blending significantly reduces the amount of larger aggregates, only large amounts of OME<sub>3</sub>, close to pure OME<sub>3</sub>, lead to a considerable suppression of nanoparticles formed throughout the flame. A linear correlation is identified between the OME<sub>3</sub> content in the fuel and the reduction in the soot volume fraction of larger aggregates, while smaller blending ratios may lead to an increased number of nanoparticles for some positions in the flame for the richer flame condition. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Simulation reaktiver Thermo-Fluid Systeme (STFS) |
| Hinterlegungsdatum: | 17 Sep 2021 05:52 |
| Letzte Änderung: | 14 Jan 2024 10:40 |
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