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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00569869" target="_blank" >RIV/61388955:_____/23:00569869 - isvavai.cz</a>

Result on the web

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

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Article name in the collection

AIP Conference Proceedings

ISBN

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ISSN

0094-243X

e-ISSN

1551-7616

Number of pages

6

Pages from-to

030002

Publisher name

AIP Publishing

Place of publication

Melville

Event location

Horní Bečva

Event date

Oct 13, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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