Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

H2/air and wet CO/air combustion mechanisms were studied. The hydrogen/CO submechanism of the Leeds Methane Oxidation Mechanism was updated on the basis of the latest reaction kinetics and thermodynamics data. The updated mechanism was tested against three hydrogen oxidation and two wet CO bulk experiments. The simulated flame velocity had relatively large uncertainty in both hydrogen-air and wet CO flames. In the case of ignition experiments, for both fuels, the uncertainties of the simulated ignition delay times were small and comparable with the scatter of the experimental data. There was a good agreement between the simulation results and the measured temperature and concentration profiles of hydrogen oxidation in a flow reactor. However, accurate ignition delay was not a result of the flow reactor experiments. The uncertainty of the required time correction for matching the simulated 50% consumption of H2 to that of the experimental one (corresponding to the simulated ignition delay) was very large. This means that very different parameter sets provide very different ignition delays, but very similar concentration curves after the time correction. The uncertainty of the enthalpy of formation of OH is highly responsible for the uncertainty of the calculated peak OH concentration.

Original languageEnglish
Title of host publicationInternational Symposium on Combustion, Abstracts of Accepted Papers
Pages65-66
Number of pages2
Publication statusPublished - 2004
Event30th International Symposium on Combustion, Abstracts of Symposium Papers - Chicago, IL, United States
Duration: Jul 25 2004Jul 30 2004

Other

Other30th International Symposium on Combustion, Abstracts of Symposium Papers
CountryUnited States
CityChicago, IL
Period7/25/047/30/04

Fingerprint

Uncertainty analysis
Carbon monoxide
Ignition
Oxidation
Hydrogen
Air
Experiments
Reaction kinetics
Enthalpy
Time delay
Methane
Uncertainty
Thermodynamics
Temperature

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Zsély, I., Zádor, J., & Turányi, T. (2004). Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms. In International Symposium on Combustion, Abstracts of Accepted Papers (pp. 65-66)

Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms. / Zsély, I.; Zádor, J.; Turányi, T.

International Symposium on Combustion, Abstracts of Accepted Papers. 2004. p. 65-66.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zsély, I, Zádor, J & Turányi, T 2004, Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms. in International Symposium on Combustion, Abstracts of Accepted Papers. pp. 65-66, 30th International Symposium on Combustion, Abstracts of Symposium Papers, Chicago, IL, United States, 7/25/04.
Zsély I, Zádor J, Turányi T. Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms. In International Symposium on Combustion, Abstracts of Accepted Papers. 2004. p. 65-66
Zsély, I. ; Zádor, J. ; Turányi, T. / Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms. International Symposium on Combustion, Abstracts of Accepted Papers. 2004. pp. 65-66
@inproceedings{2734766d105d4be18de2a413c084a8a3,
title = "Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms",
abstract = "H2/air and wet CO/air combustion mechanisms were studied. The hydrogen/CO submechanism of the Leeds Methane Oxidation Mechanism was updated on the basis of the latest reaction kinetics and thermodynamics data. The updated mechanism was tested against three hydrogen oxidation and two wet CO bulk experiments. The simulated flame velocity had relatively large uncertainty in both hydrogen-air and wet CO flames. In the case of ignition experiments, for both fuels, the uncertainties of the simulated ignition delay times were small and comparable with the scatter of the experimental data. There was a good agreement between the simulation results and the measured temperature and concentration profiles of hydrogen oxidation in a flow reactor. However, accurate ignition delay was not a result of the flow reactor experiments. The uncertainty of the required time correction for matching the simulated 50{\%} consumption of H2 to that of the experimental one (corresponding to the simulated ignition delay) was very large. This means that very different parameter sets provide very different ignition delays, but very similar concentration curves after the time correction. The uncertainty of the enthalpy of formation of OH is highly responsible for the uncertainty of the calculated peak OH concentration.",
author = "I. Zs{\'e}ly and J. Z{\'a}dor and T. Tur{\'a}nyi",
year = "2004",
language = "English",
pages = "65--66",
booktitle = "International Symposium on Combustion, Abstracts of Accepted Papers",

}

TY - GEN

T1 - Uncertainty analysis of update hydrogen and carbon monoxide oxidation mechanisms

AU - Zsély, I.

AU - Zádor, J.

AU - Turányi, T.

PY - 2004

Y1 - 2004

N2 - H2/air and wet CO/air combustion mechanisms were studied. The hydrogen/CO submechanism of the Leeds Methane Oxidation Mechanism was updated on the basis of the latest reaction kinetics and thermodynamics data. The updated mechanism was tested against three hydrogen oxidation and two wet CO bulk experiments. The simulated flame velocity had relatively large uncertainty in both hydrogen-air and wet CO flames. In the case of ignition experiments, for both fuels, the uncertainties of the simulated ignition delay times were small and comparable with the scatter of the experimental data. There was a good agreement between the simulation results and the measured temperature and concentration profiles of hydrogen oxidation in a flow reactor. However, accurate ignition delay was not a result of the flow reactor experiments. The uncertainty of the required time correction for matching the simulated 50% consumption of H2 to that of the experimental one (corresponding to the simulated ignition delay) was very large. This means that very different parameter sets provide very different ignition delays, but very similar concentration curves after the time correction. The uncertainty of the enthalpy of formation of OH is highly responsible for the uncertainty of the calculated peak OH concentration.

AB - H2/air and wet CO/air combustion mechanisms were studied. The hydrogen/CO submechanism of the Leeds Methane Oxidation Mechanism was updated on the basis of the latest reaction kinetics and thermodynamics data. The updated mechanism was tested against three hydrogen oxidation and two wet CO bulk experiments. The simulated flame velocity had relatively large uncertainty in both hydrogen-air and wet CO flames. In the case of ignition experiments, for both fuels, the uncertainties of the simulated ignition delay times were small and comparable with the scatter of the experimental data. There was a good agreement between the simulation results and the measured temperature and concentration profiles of hydrogen oxidation in a flow reactor. However, accurate ignition delay was not a result of the flow reactor experiments. The uncertainty of the required time correction for matching the simulated 50% consumption of H2 to that of the experimental one (corresponding to the simulated ignition delay) was very large. This means that very different parameter sets provide very different ignition delays, but very similar concentration curves after the time correction. The uncertainty of the enthalpy of formation of OH is highly responsible for the uncertainty of the calculated peak OH concentration.

UR - http://www.scopus.com/inward/record.url?scp=10344226676&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10344226676&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:10344226676

SP - 65

EP - 66

BT - International Symposium on Combustion, Abstracts of Accepted Papers

ER -