The Structure of Nonpremixed Hydrogen-Air Flames

D. Trees; K. Seshadri; G. Balakrishnan; T. M. Brown; R. W. Pitz; S. P. Nandula; M. D. Smooke; V. Giovangigli

doi:10.1080/00102209508907731

The Structure of Nonpremixed Hydrogen-Air Flames

D. Trees
, K. Seshadri
, G. Balakrishnan
, T. M. Brown
, R. W. Pitz
, S. P. Nandula
, M. D. Smooke
, V. Giovangigli

Research output: Contribution to journal › Article › peer-review

Abstract

An experimental and numerical study was performed to characterize the structure of diffusion flames stabilized in the mixing layer formed between counterflowing streams of hydrogen diluted with nitrogen and air diluted with nitrogen. Measurements were made with 15% to 30% hydrogen by volume in the fuel stream. The concentration of the reactants in the counterflowing streams as a function of their velocity at flame extinction was recorded over a wide parametric range. Using a UV Raman scattering system, the profiles of the mass fraction of the species H₂, O₂, H₂O and N₂ and the temperature profiles were measured at two conditions, one close to and the other far from the critical conditions of extinction. Numerical calculations using detailed chemistry were performed to predict the flame structure and the results were found to agree well with the measurements. It is found that the chemical-kinetic mechanism employed here can accurately describe the combustion of hydrogen.

Original language	English
Pages (from-to)	427-439
Number of pages	13
Journal	Combustion Science and Technology
Volume	104
Issue number	4-6
DOIs	https://doi.org/10.1080/00102209508907731
Publication status	Published - 1 Jan 1995

Keywords

Flames
diffusion
laminar

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10.1080/00102209508907731

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title = "The Structure of Nonpremixed Hydrogen-Air Flames",

abstract = "An experimental and numerical study was performed to characterize the structure of diffusion flames stabilized in the mixing layer formed between counterflowing streams of hydrogen diluted with nitrogen and air diluted with nitrogen. Measurements were made with 15\% to 30\% hydrogen by volume in the fuel stream. The concentration of the reactants in the counterflowing streams as a function of their velocity at flame extinction was recorded over a wide parametric range. Using a UV Raman scattering system, the profiles of the mass fraction of the species H2, O2, H2O and N2 and the temperature profiles were measured at two conditions, one close to and the other far from the critical conditions of extinction. Numerical calculations using detailed chemistry were performed to predict the flame structure and the results were found to agree well with the measurements. It is found that the chemical-kinetic mechanism employed here can accurately describe the combustion of hydrogen.",

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T1 - The Structure of Nonpremixed Hydrogen-Air Flames

AU - Trees, D.

AU - Seshadri, K.

AU - Balakrishnan, G.

AU - Brown, T. M.

AU - Pitz, R. W.

AU - Nandula, S. P.

AU - Smooke, M. D.

AU - Giovangigli, V.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - An experimental and numerical study was performed to characterize the structure of diffusion flames stabilized in the mixing layer formed between counterflowing streams of hydrogen diluted with nitrogen and air diluted with nitrogen. Measurements were made with 15% to 30% hydrogen by volume in the fuel stream. The concentration of the reactants in the counterflowing streams as a function of their velocity at flame extinction was recorded over a wide parametric range. Using a UV Raman scattering system, the profiles of the mass fraction of the species H2, O2, H2O and N2 and the temperature profiles were measured at two conditions, one close to and the other far from the critical conditions of extinction. Numerical calculations using detailed chemistry were performed to predict the flame structure and the results were found to agree well with the measurements. It is found that the chemical-kinetic mechanism employed here can accurately describe the combustion of hydrogen.

AB - An experimental and numerical study was performed to characterize the structure of diffusion flames stabilized in the mixing layer formed between counterflowing streams of hydrogen diluted with nitrogen and air diluted with nitrogen. Measurements were made with 15% to 30% hydrogen by volume in the fuel stream. The concentration of the reactants in the counterflowing streams as a function of their velocity at flame extinction was recorded over a wide parametric range. Using a UV Raman scattering system, the profiles of the mass fraction of the species H2, O2, H2O and N2 and the temperature profiles were measured at two conditions, one close to and the other far from the critical conditions of extinction. Numerical calculations using detailed chemistry were performed to predict the flame structure and the results were found to agree well with the measurements. It is found that the chemical-kinetic mechanism employed here can accurately describe the combustion of hydrogen.

KW - Flames

KW - diffusion

KW - laminar

U2 - 10.1080/00102209508907731

DO - 10.1080/00102209508907731

M3 - Article

AN - SCOPUS:84894623958

SN - 0010-2202

VL - 104

SP - 427

EP - 439

JO - Combustion Science and Technology

JF - Combustion Science and Technology

IS - 4-6

ER -

The Structure of Nonpremixed Hydrogen-Air Flames

Abstract

Keywords

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