Numerical simulation of the combustion of preheated ultra-lean dimethyl ether/air mixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27200%2F23%3A10253957" target="_blank" >RIV/61989100:27200/23:10253957 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10477764 RIV/61989100:27230/23:10253957 RIV/61989100:27240/23:10253957 RIV/61989100:27740/23:10253957

Výsledek na webu

<a href="https://doi.org/10.1063/5.0120818" target="_blank" >https://doi.org/10.1063/5.0120818</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0120818" target="_blank" >10.1063/5.0120818</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical simulation of the combustion of preheated ultra-lean dimethyl ether/air mixture

Popis výsledku v původním jazyce

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 oC. 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.

Název v anglickém jazyce

Numerical simulation of the combustion of preheated ultra-lean dimethyl ether/air mixture

Popis výsledku anglicky

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 oC. 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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20700 - Environmental engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

AIP Conference Proceedings. Volume 2672

ISBN

978-0-7354-4325-9

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

5

Strana od-do

030002

Název nakladatele

American Institute of Physics

Místo vydání

New York

Místo konání akce

Horní Bečva

Datum konání akce

13. 10. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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