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Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels

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Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels. / Mira Martinez, Daniel; Jiang, Xi; Moulinec, C. et al.
In: Computers and Fluids, Vol. 88, 15.12.2013, p. 688-701.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Mira Martinez, D, Jiang, X, Moulinec, C & Emerson, DR 2013, 'Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels', Computers and Fluids, vol. 88, pp. 688-701. https://doi.org/10.1016/j.compfluid.2013.03.016

APA

Vancouver

Mira Martinez D, Jiang X, Moulinec C, Emerson DR. Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels. Computers and Fluids. 2013 Dec 15;88:688-701. Epub 2013 Apr 9. doi: 10.1016/j.compfluid.2013.03.016

Author

Mira Martinez, Daniel ; Jiang, Xi ; Moulinec, C. et al. / Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels. In: Computers and Fluids. 2013 ; Vol. 88. pp. 688-701.

Bibtex

@article{5ccbb9322fad4aa7a00537ecd2862d93,
title = "Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels",
abstract = "Large-eddy simulation is conducted to study the turbulent combustion processes of hydrogen and syngas flames. The subgrid scale momentum transport is performed with a one-equation model using the subgrid scale turbulent kinetic energy, while the linear-eddy model is employed to represent the scalar transport. Reduced chemical kinetics is used to describe the flame chemistry with the extended Zeldovich mechanism to account for the thermal formation of NOx. Results show the effects of the hydrogen content and of the Reynolds number on the characteristics of the flames. Higher hydrogen content contributes to increase the heat released after combustion leading to higher temperature peaks and thicker shear layers. The presence of CO in the fuel stream affects the flame dynamics with the development of a more vortical and wrinkled flow field. The vorticity field and turbulence/chemistry interactions are also discussed. Scalar profiles and comparison against experimental data are presented where a reasonable agreement is observed.",
keywords = "Large-eddy simulation (LES), Linear-eddy model (LEM) , Hydrogen , Syngas , Vortical structure , Validation",
author = "{Mira Martinez}, Daniel and Xi Jiang and C. Moulinec and D.R. Emerson",
year = "2013",
month = dec,
day = "15",
doi = "10.1016/j.compfluid.2013.03.016",
language = "English",
volume = "88",
pages = "688--701",
journal = "Computers and Fluids",
issn = "0045-7930",
publisher = "Elsevier Limited",

}

RIS

TY - JOUR

T1 - Numerical simulations of turbulent non-premixed jet flames of hydrogen-enriched fuels

AU - Mira Martinez, Daniel

AU - Jiang, Xi

AU - Moulinec, C.

AU - Emerson, D.R.

PY - 2013/12/15

Y1 - 2013/12/15

N2 - Large-eddy simulation is conducted to study the turbulent combustion processes of hydrogen and syngas flames. The subgrid scale momentum transport is performed with a one-equation model using the subgrid scale turbulent kinetic energy, while the linear-eddy model is employed to represent the scalar transport. Reduced chemical kinetics is used to describe the flame chemistry with the extended Zeldovich mechanism to account for the thermal formation of NOx. Results show the effects of the hydrogen content and of the Reynolds number on the characteristics of the flames. Higher hydrogen content contributes to increase the heat released after combustion leading to higher temperature peaks and thicker shear layers. The presence of CO in the fuel stream affects the flame dynamics with the development of a more vortical and wrinkled flow field. The vorticity field and turbulence/chemistry interactions are also discussed. Scalar profiles and comparison against experimental data are presented where a reasonable agreement is observed.

AB - Large-eddy simulation is conducted to study the turbulent combustion processes of hydrogen and syngas flames. The subgrid scale momentum transport is performed with a one-equation model using the subgrid scale turbulent kinetic energy, while the linear-eddy model is employed to represent the scalar transport. Reduced chemical kinetics is used to describe the flame chemistry with the extended Zeldovich mechanism to account for the thermal formation of NOx. Results show the effects of the hydrogen content and of the Reynolds number on the characteristics of the flames. Higher hydrogen content contributes to increase the heat released after combustion leading to higher temperature peaks and thicker shear layers. The presence of CO in the fuel stream affects the flame dynamics with the development of a more vortical and wrinkled flow field. The vorticity field and turbulence/chemistry interactions are also discussed. Scalar profiles and comparison against experimental data are presented where a reasonable agreement is observed.

KW - Large-eddy simulation (LES)

KW - Linear-eddy model (LEM)

KW - Hydrogen

KW - Syngas

KW - Vortical structure

KW - Validation

U2 - 10.1016/j.compfluid.2013.03.016

DO - 10.1016/j.compfluid.2013.03.016

M3 - Journal article

VL - 88

SP - 688

EP - 701

JO - Computers and Fluids

JF - Computers and Fluids

SN - 0045-7930

ER -