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Numerical simulation of the combustion of preheated ultra-lean dimethyl ether/air mixture
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SYSNO ASEP 0569869 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Numerical simulation of the combustion of preheated ultra-lean dimethyl ether/air mixture Tvůrce(i) Blejchař, T. (CZ)
Nevrlý, V. (CZ)
Dostál, Michal (UFCH-W) RID, ORCID, SAI
Klečka, V. (CZ)
Bitala, P. (CZ)
Válek, V. (CZ)
Vašinek, M. (CZ)
Suchánek, Jan (UFCH-W) RID, ORCID
Zelinger, Zdeněk (UFCH-W) RID, ORCID
Wild, J. (CZ)Číslo článku 030002 Zdroj.dok. AIP Conference Proceedings, 2672. - Melville : AIP Publishing, 2023 - ISSN 0094-243X Poč.str. 6 s. Forma vydání Tištěná - P Akce Meeting of Departments of Fluid Mechanics and Thermodynamics /39./ Datum konání 13.10.2021 - 15.10.2021 Místo konání Horní Bečva Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova combustion ; organic compounds ; computational methods Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP LTC17071 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA17-05167s GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 EID SCOPUS 85149779687 DOI 10.1063/5.0120818 Anotace The combustion of preheated ultra-lean dimethyl ether/air mixture was investigated numerically. A laminar burner stabilized flame of preheated ultra-lean dimethyl ether was stabilized by methane co-flow and combustion respectively. Steady burning of co-flow methane ensured ignition of dimethyl ether/air mixture at temperature ca 330 °C. A detailed reaction mechanism of dimethyl ether low-temperature combustion and methane combustion were applied in the two-dimension axisymmetric numerical simulation. The state-of-the-art low-temperature chemistry of dimethyl ether and methane was applied in numerical simulation. The thermal interaction of flame and solid boundaries was achieved by solid-fluid coupled boundary conditions in numerical simulation. 2D axisymmetric numerical simulation was performed based on the physical measurement and experimental setup. The axial temperature profile of the flame was obtained by experiments and numerical simulation relatively well agreed with the experiment. The chemical radicals, like OH, CH2O, and HO2, occurrence in lean dimethyl/air flame were also obtained by experiment. The computational simulation of flame showed that there was thermal interaction between flames and solid parts of the experimental burner. The dimethyl ether/air mixture was preheated upstream by the thermal conductivity of solid parts. High and Low-temperature combustion zones were identified on the base of results of numerical simulation and the presence of radicals specific for the appropriate type of combustion respectively. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2024
Počet záznamů: 1