Numerical Modelling of Soot Formation in Laminar Axisymmetric Ethylene-Air Coflow Flames at Atmospheric and Elevated Pressures

Ahmed Gamaleldin Abdelgadir; Ihsan Allah Rakha; Scott A. Steinmetz; Antonio Attili; Fabrizio Bisetti; William L. Roberts

Numerical Modelling of Soot Formation in Laminar Axisymmetric Ethylene-Air Coflow Flames at Atmospheric and Elevated Pressures

Ahmed Gamaleldin Abdelgadir, Ihsan Allah Rakha, Scott A. Steinmetz, Antonio Attili, Fabrizio Bisetti, William L. Roberts

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A set of coflow diffusion flames are simulated to study the formation, growth, and oxidation of soot in flames of diluted hydrocarbon fuels, with focus on the effects of pressure. Firstly, we assess the ability of a high performance CFD solver, coupled with detailed transport and kinetic models, to reproduce experimental measurements of a series of ethylene-air coflow flames. Detailed finite rate chemistry describing the formation of Polycyclic Aromatic Hydro-carbons is used. Soot is modeled with a moment method and the resulting moment transport equations are solved with a Lagrangian numerical scheme. Numerical and experimental results are compared for various pressures. Finally, a sensitivity study is performed assessing the effect of the boundary conditions and kinetic mechanisms on the flame structure and stabilization properties.

Original language	English (US)
Title of host publication	Proceedings of the European Combustion Meeting 2015
State	Published - Mar 30 2015

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title = "Numerical Modelling of Soot Formation in Laminar Axisymmetric Ethylene-Air Coflow Flames at Atmospheric and Elevated Pressures",

abstract = "A set of coflow diffusion flames are simulated to study the formation, growth, and oxidation of soot in flames of diluted hydrocarbon fuels, with focus on the effects of pressure. Firstly, we assess the ability of a high performance CFD solver, coupled with detailed transport and kinetic models, to reproduce experimental measurements of a series of ethylene-air coflow flames. Detailed finite rate chemistry describing the formation of Polycyclic Aromatic Hydro-carbons is used. Soot is modeled with a moment method and the resulting moment transport equations are solved with a Lagrangian numerical scheme. Numerical and experimental results are compared for various pressures. Finally, a sensitivity study is performed assessing the effect of the boundary conditions and kinetic mechanisms on the flame structure and stabilization properties.",

author = "Abdelgadir, {Ahmed Gamaleldin} and Rakha, {Ihsan Allah} and Steinmetz, {Scott A.} and Antonio Attili and Fabrizio Bisetti and Roberts, {William L.}",

note = "KAUST Repository Item: Exported on 2020-10-01",

year = "2015",

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day = "30",

language = "English (US)",

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T1 - Numerical Modelling of Soot Formation in Laminar Axisymmetric Ethylene-Air Coflow Flames at Atmospheric and Elevated Pressures

AU - Abdelgadir, Ahmed Gamaleldin

AU - Rakha, Ihsan Allah

AU - Steinmetz, Scott A.

AU - Attili, Antonio

AU - Bisetti, Fabrizio

AU - Roberts, William L.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2015/3/30

Y1 - 2015/3/30

N2 - A set of coflow diffusion flames are simulated to study the formation, growth, and oxidation of soot in flames of diluted hydrocarbon fuels, with focus on the effects of pressure. Firstly, we assess the ability of a high performance CFD solver, coupled with detailed transport and kinetic models, to reproduce experimental measurements of a series of ethylene-air coflow flames. Detailed finite rate chemistry describing the formation of Polycyclic Aromatic Hydro-carbons is used. Soot is modeled with a moment method and the resulting moment transport equations are solved with a Lagrangian numerical scheme. Numerical and experimental results are compared for various pressures. Finally, a sensitivity study is performed assessing the effect of the boundary conditions and kinetic mechanisms on the flame structure and stabilization properties.

AB - A set of coflow diffusion flames are simulated to study the formation, growth, and oxidation of soot in flames of diluted hydrocarbon fuels, with focus on the effects of pressure. Firstly, we assess the ability of a high performance CFD solver, coupled with detailed transport and kinetic models, to reproduce experimental measurements of a series of ethylene-air coflow flames. Detailed finite rate chemistry describing the formation of Polycyclic Aromatic Hydro-carbons is used. Soot is modeled with a moment method and the resulting moment transport equations are solved with a Lagrangian numerical scheme. Numerical and experimental results are compared for various pressures. Finally, a sensitivity study is performed assessing the effect of the boundary conditions and kinetic mechanisms on the flame structure and stabilization properties.

UR - http://hdl.handle.net/10754/581490

UR - http://www.ecm2015.hu/papers/P5-02.pdf

M3 - Conference contribution

BT - Proceedings of the European Combustion Meeting 2015

ER -

Numerical Modelling of Soot Formation in Laminar Axisymmetric Ethylene-Air Coflow Flames at Atmospheric and Elevated Pressures

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