The pressure dependence of laminar burning velocity by the spherical bomb method

Agnew, J.T.; Graiff, L. B.

doi:10.1016/0010-2180(61)90099-2

Cited by 70 publications

(6 citation statements)

References 5 publications

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“…The last method, which is the one adopted in the present work and called the traditional approach (Tse, Zhu, & Law, 2000), allows experimentation at initial conditions of very high pressure and temperature. It was demonstrated by various authors that laminar burning velocities of air mixed with hydrogen (Iijima & Takeno, 1986;Milton & Keck, 1984), methane (Agnew & Graiff, 1961;Iijima & Takeno, 1986), propane (Agnew & Graiff, 1961;Babkin, Bukharov, & Molkov, 1989;Metghalchi & Keck, 1980), n-butane (Clarke, Stone, & Beckwith, 2001), iso-butane (Clarke et al, 2001), 2-methyl-pentane (Halstead, Pyle, & Quinn, 1974), n-heptane (Babkin, Vyun, & Kozachenko, 1967), iso-octane (Babkin et al, 1967;Metghalchi & Keck, 1982), ethylene (Agnew & Graiff, 1961;Halstead et al, 1974), acetylene (Agnew & Graiff, 1961;Rallis, Garforth, & Steinz, 1965), benzene (Babkin et al, 1967), toluene (Agnew & Graiff, 1961;Halstead et al, 1974), indolene (Metghalchi & Keck, 1982), methanol (Metghalchi & Keck, 1982), and acetone (Molkov & Nekrasov, 1981), could be determined by this method. In some cases, the initial conditions were varied up to 50 bar and 700 K.…”

Section: Introductionmentioning

confidence: 98%

Laminar burning velocities of hydrogen–air mixtures from closed vessel gas explosions

Dahoe

2005

Journal of Loss Prevention in the Process Industries

240

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Section: Introductionmentioning

confidence: 98%

Laminar burning velocities of hydrogen–air mixtures from closed vessel gas explosions

Dahoe

2005

Journal of Loss Prevention in the Process Industries

240

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“…Therefore, it is first of substantial interest to learn about the surrogate fuel combustion characteristics and associated chemical mechanism in order to more effectively exploit commercial jet fuels. Several methodologies have been used to quantify fundamental properties of surrogate jet fuels, such as ignition, − laminar flame speed, ,− flame stretch, and extinction limit. ,− Among these parameters, laminar flame speed is a key parameter to understand the reactivity, diffusivity, and exothermicity of fuel/air mixtures and validating both kinetic chemical mechanisms and turbulent models. , …”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Laminar Flame Speed Measurement for Kerosene Fuels: Jet A-1, Surrogate Fuel, and Its Pure Components

Modica

et al. 2018

Energy Fuels

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The present work investigated the laminar flame speed measurement of kerosene-relevant fuel, including Jet A-1 commercial kerosene, and surrogate kerosene fuel and its pure components (n-decane, n-propyl benzene, and propyl cyclohexane) using a high-pressure Bunsen flame burner. The OH* chemiluminescence technique and the kerosene-PLIF technique were used for flame contours detection in order to calculate the laminar flame speed. The experiments were first conducted for n-decane/air flame at T = 400 K, φ = 0.6−1.3, and atmospheric pressure conditions in order to validate the whole experimental system and measurement methodology. The laminar flame speed of Jet A-1/air, surrogate/air, and pure kerosene component (n-decane, n-propyl benzene, and propyl cyclohexane) was then measured under large operating conditions, including temperature T = 400−473 K, pressure P = 0.1−1.0 MPa, and equivalence ratio φ = 0.7−1.3. It was found that these three pure components of kerosene have very similar laminar flame speed. By comparing the experimental results of surrogate kerosene and Jet A-1 commercial kerosene, it was observed that the proposed surrogate kerosene, i.e., mixtures of 76.7 wt % ndecane, 13.2 wt % n-propyl benzene, and 10.1 wt % propyl cyclohexane, can appropriately reproduce the flame speed property of Jet A-1 commercial kerosene fuel. The experimental results were further compared with simulation results using a skeletal kerosene mechanism.

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“…16À25 Such data are essential for the design and construction of venting devices, modeling of turbulent combustion, optimization of internal combustion engines, and flame inhibition and/or suppression. Measurements have been made using flames stabilized over a burner, 23,25À27 flames propagating in tubes or in spherical vessels with central ignition, 19,28,29 or counter-flow twin flames. 17,20À22, 24 Measured or calculated normal burning velocities were also used for the determination of overall kinetic parameters (activation energy and reaction order) of the oxidation process in flames.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the need for reducing soot or other pollutant concentrations in combustion systems required the study of ethylene chemistry, especially in ethylene-rich mixtures. − Normal burning velocities for ethylene–air and ethylene–air–diluents have been reported by many researchers for various fuel/oxygen and oxygen/diluent ratios. − Such data are essential for the design and construction of venting devices, modeling of turbulent combustion, optimization of internal combustion engines, and flame inhibition and/or suppression. Measurements have been made using flames stabilized over a burner, ,− flames propagating in tubes or in spherical vessels with central ignition, ,, or counter-flow twin flames. ,− , Measured or calculated normal burning velocities were also used for the determination of overall kinetic parameters (activation energy and reaction order) of the oxidation process in flames. , …”

Section: Introductionmentioning

confidence: 99%

Additive Effects on the Burning Velocity of Ethylene–Air Mixtures

2011

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Using a simple correlation based on the cubic law of early pressure rise during a closed vessel explosion, the laminar burning velocities of the stoichiometric ethylene–air mixture diluted with several additives (Ar, N2, and CO2) (concentrations between 4 and 40 vol %) were calculated from pressure–time records, at total initial pressures between 0.2 and 1.2 bar and ambient initial temperature. These are important input properties for numerical modeling of explosion propagation in closed or vented enclosures and for safety recommendations concerning the necessary inert gas addition. The decrease of burning velocities determined by the increase of the total initial pressure and inert gas addition is examined. A computational study of free laminar premixed flames of ethylene–air in the presence of the same additives based on the use of 53 species and an extended reaction mechanism with 592 elementary reactions delivered the temperature and species profiles in the flame front, together with the flame width and burning velocity. Both the computed and the experimental burning velocities versus the additive concentration follow the same trend, explained by the influence of additives on the overall reaction rate between fuel and oxidant in the reaction zone and heat- and mass-transfer rates between the burned and unburned gases. The differences observed between computed and experimental burning velocities are small and can be assigned to both unavoidable scattering of available measurements and the mechanism used for numerical simulations.

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The pressure dependence of laminar burning velocity by the spherical bomb method

Cited by 70 publications

References 5 publications

Laminar burning velocities of hydrogen–air mixtures from closed vessel gas explosions

Laminar burning velocities of hydrogen–air mixtures from closed vessel gas explosions

Experimental Investigation of Laminar Flame Speed Measurement for Kerosene Fuels: Jet A-1, Surrogate Fuel, and Its Pure Components

Additive Effects on the Burning Velocity of Ethylene–Air Mixtures

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