Laminar burning velocity of stoichiometric methane-air: pressure and temperature dependence

Garforth, A.M.; Rallis, C.J.

doi:10.1016/0010-2180(78)90113-x

Cited by 55 publications

(13 citation statements)

References 15 publications

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“…Measurements of the change of flame diameter in the circumferential direction by the use of flame photography and a consideration of the heat loss in the velocity estimation showed that these were not" the main causes of the difference. This leaves the first cause, i), advocated by Andrews andBradley (1972) andGarforth Rallis (1978) as the prime factor.…”

Section: Measurement Of the Laminar Burning Velocitymentioning

confidence: 96%

“…This and possible corrections have been discussed by, for example, Andrews and Bradley (1972), Garforth and Rallis (1978) and Manton, Von Elbe and Lewis (1953). To examine this in an alternative way, the experiments in the present work use different initial temperatures of the mixture combined with calculations which account for the effect of the reaction zone thickness.…”

Section: Introductionmentioning

confidence: 91%

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Laminar and turbulent burning velocities of propane in spherical vessels

Tanaka

Milton

1992

Shock Waves

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Abstract. Laminar and atrbulent burning velocities of C3Hs/air mixtures under moderately elevated temperature and pressure conditions have been determined experimentally using spherical combustion bombs. The results are reported here and the effects of temperature, pressure, turbulence intensity and stoichiometric ratio are included. The results obtained are compared with those of other researchers. The laminar burning velocity obtained from the pressuretime curves without compensation for the reaction zone thickness is lower than those determined using burners. A reaction zone thickness correction which reduces the difference is suggested and this relies on an assessment based on the different histories found experimentally when different initial temperatures were used for the isentrope through the standard state. For mixtures with initially low turbulence levels, both the turbulent burning velocity and the burning velocity ratio, turbulent to laminar, increase as the combustion progresses. The rate of increase becomes larger with increase in the initial and instantaneous turbulence intensity, temperature and stoichiometric ratio. Deviation from the Damkdhler relationship is noted.

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Section: Measurement Of the Laminar Burning Velocitymentioning

confidence: 96%

Section: Introductionmentioning

confidence: 91%

Laminar and turbulent burning velocities of propane in spherical vessels

Tanaka

Milton

1992

Shock Waves

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“…Many workers have investigated the effect of pressure and initial temperature on laminar flame speed. Garforth and Rallis (13) reported the measurement of the laminar UDC: 66.071:547.211]:66-97:66.083 DOI: https://doi.org/10.2298/APT1950220S BIBLID: 1450-7188 (2019) 50, 220-227…”

Section: Laminar Flame Speedmentioning

confidence: 99%

The adiabatic flame temperature and laminar flame speed of methane premixed flames at varying pressures

Sakhrieh

2019

Acta per tech

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This paper studies the influence of equivalence ratio, pressure and initial temperature on adiabatic flame temperature and laminar flame speed of methane-air mixture. The results indicate that adiabatic flame temperature is weakly correlated with pressure. The adiabatic flame temperature increases only by about 50 ºC as a result of 30 bar pressure increase. The flame speed is inversely proportional to pressure. The maximum adiabatic flame temperature and flame speed occur at the stoichiometric ratio, Φ=1. The percent increase in the flame speed was about 400% when the initial temperature of the mixture is increased from 25 ºC to 425 ºC.

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“…Their work agreed well with the work carried out by Saeed and Stone 13 and Andrews and Bradley. 30 The initial temperature dependence on burning velocity was investigated by different researchers 13,20,31,32 using tube method and constant volume vessel. They showed that burning velocity of hydrocarbon-air mixtures increases with the initial mixture temperature and is mainly due to the preheating effect which increases the heat release rate as a result of increasing the initial enthalpies of reacting materials.…”

Section: Previous Studiesmentioning

confidence: 99%

Measurements of the laminar burning velocity for propane: Air mixtures

Ebaid

Al-khishali

2016

Advances in Mechanical Engineering

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In this research, an experimental setup was built based on using K-type thermocouples inserted in a cylindrical vessel and coupled with a computer system to enable online reading of flame speed for propane-air mixtures. The work undertaken here has come up with data for laminar burning velocity of the propane-air mixtures based on three initial temperatures T u = 300, 325 and 350 K, three initial pressures p u = 0.5, 1.0 and 1.5 bar over a range of equivalence ratios f between 0.6 and 1.5. The results obtained gave a reasonable agreement with experimental data reported in the literature. Results showed that laminar burning velocity increases at low initial pressures and decreases at high pressures, while the opposite occurs incase of temperatures. The maximum values of the laminar burning velocity occur at T = 350 K, p u = 0.5 and f = 1.0, respectively, while the minimum values of the laminar burning velocity occur at T = 300 K, p u = 1.5 and f = 1.2. Also, the influence of flame stretching on laminar burning velocity was investigated and it was found that stretch effect is weak since Lewis number was below unity for all cases considered. Based on experimental results, an empirical equation has been derived to calculate the laminar burning velocity. The values of the laminar burning velocity calculated from this equation show great compatibility with the published results. Therefore, the derived empirical equation can be used to calculate the burning velocities of any gas of paraffin gas fuels in the range of mixture temperature and pressure considered.

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Laminar burning velocity of stoichiometric methane-air: pressure and temperature dependence

Cited by 55 publications

References 15 publications

Laminar and turbulent burning velocities of propane in spherical vessels

Laminar and turbulent burning velocities of propane in spherical vessels

The adiabatic flame temperature and laminar flame speed of methane premixed flames at varying pressures

Measurements of the laminar burning velocity for propane: Air mixtures

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