Adiabatic laminar burning velocities of CH4 + H2 + air flames at low pressures

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Adiabatic laminar burning velocities of CH4 + H2 + air flames at low pressures. / Konnov, Alexander; Riemeijer, R.; de Goey, L. P. H.

In: Fuel, Vol. 89, No. 7, 2010, p. 1392-1396.

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Konnov, Alexander ; Riemeijer, R. ; de Goey, L. P. H. / Adiabatic laminar burning velocities of CH4 + H2 + air flames at low pressures. In: Fuel. 2010 ; Vol. 89, No. 7. pp. 1392-1396.

RIS

TY - JOUR

T1 - Adiabatic laminar burning velocities of CH4 + H2 + air flames at low pressures

AU - Konnov, Alexander

AU - Riemeijer, R.

AU - de Goey, L. P. H.

PY - 2010

Y1 - 2010

N2 - Experimental measurements of the adiabatic burning velocity in methane + hydrogen + air flames using the Heat Flux method are presented. The hydrogen content in the fuel was varied from 0 to 20%. Non-stretched flames were stabilized on a perforated plate burner from 20 to 100 kPa. The equivalence ratio was varied from 0.8 to 1.4. Adiabatic burning velocities of CH4 + H-2 + air mixtures were found in good agreement with the literature results at atmospheric pressure. Also low-pressure measurements in CH4 + air flames performed earlier were accurately reproduced. The effects of enrichment by hydrogen on the laminar burning velocity at low pressures have been studied for the first time. Calculated burning velocities using the Konnov mechanism are in satisfactory agreement with the experiments over the entire range of conditions. Pressure dependences of the burning velocities for the three fuels studied could be approximated by an empirical exponential correlation. (C) 2009 Elsevier Ltd. All rights reserved.

AB - Experimental measurements of the adiabatic burning velocity in methane + hydrogen + air flames using the Heat Flux method are presented. The hydrogen content in the fuel was varied from 0 to 20%. Non-stretched flames were stabilized on a perforated plate burner from 20 to 100 kPa. The equivalence ratio was varied from 0.8 to 1.4. Adiabatic burning velocities of CH4 + H-2 + air mixtures were found in good agreement with the literature results at atmospheric pressure. Also low-pressure measurements in CH4 + air flames performed earlier were accurately reproduced. The effects of enrichment by hydrogen on the laminar burning velocity at low pressures have been studied for the first time. Calculated burning velocities using the Konnov mechanism are in satisfactory agreement with the experiments over the entire range of conditions. Pressure dependences of the burning velocities for the three fuels studied could be approximated by an empirical exponential correlation. (C) 2009 Elsevier Ltd. All rights reserved.

KW - Burning velocity

KW - Methane

KW - Hydrogen

KW - Low pressure

U2 - 10.1016/j.fuel.2009.11.002

DO - 10.1016/j.fuel.2009.11.002

M3 - Article

VL - 89

SP - 1392

EP - 1396

JO - Fuel

T2 - Fuel

JF - Fuel

SN - 1873-7153

IS - 7

ER -