A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels

Research output: Contribution to conferencePaperAcademic

Abstract

MILD combustion, also known as Flameless combustion, is a relatively new combustion concept which has a unique potential in enhancement of efficiency and reduction of emissions, in particular NOx. Very recently, the idea of using alternative fuels such as Syngas in MILD combustion has been emerged as a very clean combustion technology which has notable environmental and economic advantages. Exploitation ofMILD/Syngas combustion in industrial applications has been largely hindered by the lack of knowledge in complex processes associated with its stabilization. The stabilization mechanism of MILD combustion is mainly based on autoignition and presence of H2 introduces preferential diffusion effects. In this study, we conduct 3D DNS of MILD combustion with CH4/H2 fuels using detailed chemistry and transport models in order to obtain a better understanding of autoignition and preferential differential effects in MILD/Syngas combustion condition. A reduced flamelet-based chemistry model is developed to include these effects using Igniting Mixing Layer (IML) Flamelets. This model shows a considerable improvement compared to the commonly-used Igniting Counterflow (ICF) Flamelets. Findings of this study will broaden our knowledge on such a complex combustion regime, and provide reduced models for accurate RANS/LES simulations of turbulent Mild flames in the future.

Conference

Conference10th U.S. National Combustion Meeting
CountryUnited States
CityCollege Park
Period23/04/1726/04/17

Fingerprint

methylidyne
synthesis gas
spontaneous combustion
Stabilization
stabilization
chemistry
turbulent flames
counterflow
Alternative fuels
exploitation
Industrial applications
economics
Economics
augmentation
simulation

Keywords

  • Direct Numerical Simulations
  • Flamelet Generated Manifolds
  • Preferential Diffusion Effects
  • Turbulent Combustion

Cite this

Abtahizadeh, E., van Oijen, J., Bastiaans, R., & de Goey, P. (2017). A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels. Paper presented at 10th U.S. National Combustion Meeting, College Park, United States.
Abtahizadeh, Ebrahim ; van Oijen, Jeroen ; Bastiaans, Rob ; de Goey, Philip. / A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels. Paper presented at 10th U.S. National Combustion Meeting, College Park, United States.
@conference{5c74bd7b16894a7e8381de1843e171f6,
title = "A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels",
abstract = "MILD combustion, also known as Flameless combustion, is a relatively new combustion concept which has a unique potential in enhancement of efficiency and reduction of emissions, in particular NOx. Very recently, the idea of using alternative fuels such as Syngas in MILD combustion has been emerged as a very clean combustion technology which has notable environmental and economic advantages. Exploitation ofMILD/Syngas combustion in industrial applications has been largely hindered by the lack of knowledge in complex processes associated with its stabilization. The stabilization mechanism of MILD combustion is mainly based on autoignition and presence of H2 introduces preferential diffusion effects. In this study, we conduct 3D DNS of MILD combustion with CH4/H2 fuels using detailed chemistry and transport models in order to obtain a better understanding of autoignition and preferential differential effects in MILD/Syngas combustion condition. A reduced flamelet-based chemistry model is developed to include these effects using Igniting Mixing Layer (IML) Flamelets. This model shows a considerable improvement compared to the commonly-used Igniting Counterflow (ICF) Flamelets. Findings of this study will broaden our knowledge on such a complex combustion regime, and provide reduced models for accurate RANS/LES simulations of turbulent Mild flames in the future.",
keywords = "Direct Numerical Simulations, Flamelet Generated Manifolds, Preferential Diffusion Effects, Turbulent Combustion",
author = "Ebrahim Abtahizadeh and {van Oijen}, Jeroen and Rob Bastiaans and {de Goey}, Philip",
year = "2017",
month = "1",
day = "1",
language = "English",
note = "10th U.S. National Combustion Meeting ; Conference date: 23-04-2017 Through 26-04-2017",

}

Abtahizadeh, E, van Oijen, J, Bastiaans, R & de Goey, P 2017, 'A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels' Paper presented at 10th U.S. National Combustion Meeting, College Park, United States, 23/04/17 - 26/04/17, .

A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels. / Abtahizadeh, Ebrahim; van Oijen, Jeroen; Bastiaans, Rob; de Goey, Philip.

2017. Paper presented at 10th U.S. National Combustion Meeting, College Park, United States.

Research output: Contribution to conferencePaperAcademic

TY - CONF

T1 - A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels

AU - Abtahizadeh,Ebrahim

AU - van Oijen,Jeroen

AU - Bastiaans,Rob

AU - de Goey,Philip

PY - 2017/1/1

Y1 - 2017/1/1

N2 - MILD combustion, also known as Flameless combustion, is a relatively new combustion concept which has a unique potential in enhancement of efficiency and reduction of emissions, in particular NOx. Very recently, the idea of using alternative fuels such as Syngas in MILD combustion has been emerged as a very clean combustion technology which has notable environmental and economic advantages. Exploitation ofMILD/Syngas combustion in industrial applications has been largely hindered by the lack of knowledge in complex processes associated with its stabilization. The stabilization mechanism of MILD combustion is mainly based on autoignition and presence of H2 introduces preferential diffusion effects. In this study, we conduct 3D DNS of MILD combustion with CH4/H2 fuels using detailed chemistry and transport models in order to obtain a better understanding of autoignition and preferential differential effects in MILD/Syngas combustion condition. A reduced flamelet-based chemistry model is developed to include these effects using Igniting Mixing Layer (IML) Flamelets. This model shows a considerable improvement compared to the commonly-used Igniting Counterflow (ICF) Flamelets. Findings of this study will broaden our knowledge on such a complex combustion regime, and provide reduced models for accurate RANS/LES simulations of turbulent Mild flames in the future.

AB - MILD combustion, also known as Flameless combustion, is a relatively new combustion concept which has a unique potential in enhancement of efficiency and reduction of emissions, in particular NOx. Very recently, the idea of using alternative fuels such as Syngas in MILD combustion has been emerged as a very clean combustion technology which has notable environmental and economic advantages. Exploitation ofMILD/Syngas combustion in industrial applications has been largely hindered by the lack of knowledge in complex processes associated with its stabilization. The stabilization mechanism of MILD combustion is mainly based on autoignition and presence of H2 introduces preferential diffusion effects. In this study, we conduct 3D DNS of MILD combustion with CH4/H2 fuels using detailed chemistry and transport models in order to obtain a better understanding of autoignition and preferential differential effects in MILD/Syngas combustion condition. A reduced flamelet-based chemistry model is developed to include these effects using Igniting Mixing Layer (IML) Flamelets. This model shows a considerable improvement compared to the commonly-used Igniting Counterflow (ICF) Flamelets. Findings of this study will broaden our knowledge on such a complex combustion regime, and provide reduced models for accurate RANS/LES simulations of turbulent Mild flames in the future.

KW - Direct Numerical Simulations

KW - Flamelet Generated Manifolds

KW - Preferential Diffusion Effects

KW - Turbulent Combustion

UR - http://www.scopus.com/inward/record.url?scp=85048988413&partnerID=8YFLogxK

M3 - Paper

ER -

Abtahizadeh E, van Oijen J, Bastiaans R, de Goey P. A novel flamelet-based model for 3D DNS of Mild combustion with CH4/H2 fuels. 2017. Paper presented at 10th U.S. National Combustion Meeting, College Park, United States.