Effects of temperature and pressure on burning velocity

Iijima, Toshio; Takeno, Tadao

doi:10.1016/0010-2180(86)90070-2

Cited by 221 publications

(113 citation statements)

References 14 publications

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“…As the starting pressure is increased from 3 to 18 bars, a decrease of the laminar burning velocity can be observed; u l0 at 18 bar is about 40% of 3 bar. The comparison is proposed with the results from other research groups [3,4,[7][8][9][10][11]. Data at high pressures are less readily available than atmospheric pressure: the present results for u l0 show a fairly good agreement with most of published data, save for the values of Halter, which appear slightly lower.…”

Section: Laminar Burning Propertiessupporting

confidence: 79%

“…engines and gas turbine combustors is the knowledge of laminar combustion properties: they offer the basis for modelling and simulation of flame-turbulence interaction. Data on the combustion properties of pure gaseous fuels are widely available in the literature [1][2][3][4][5][6][7][8][9][10][11][12], but hardly in a systematic form; moreover, data for multi-component fuels at high pressure are even scarcer: filling this gap is the scope of the Device for Hydrogen-Air Reaction Mode Analysis (DHARMA) project, aiming at generating a comprehensive and coherent grid of data on the combustion properties of CH 4 and H 2 , obtained in conditions as close as possible to those of actual engines.…”

Section: Introductionmentioning

confidence: 99%

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Burning Behaviour of High-Pressure CH4-H2-Air Mixtures

Moccia

D'Alessio

2013

Energies

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Experimental characterization of the burning behavior of gaseous mixtures has been carried out, analyzing spherical expanding flames. Tests were performed in the Device for Hydrogen-Air Reaction Mode Analysis (DHARMA) laboratory of Istituto Motori-CNR. Based on a high-pressure, constant-volume bomb, the activity is aimed at populating a systematic database on the burning properties of CH 4 , H 2 and other species of interest, in conditions typical of internal combustion (i.c.) engines and gas turbines. High-speed shadowgraph is used to record the flame growth, allowing to infer the laminar burning parameters and the flame stability properties. Mixtures of CH 4 , H 2 and air have been analyzed at initial temperature 293÷305 K, initial pressure 3÷18 bar and equivalence ratio  = 1.0. The amount of H 2 in the mixture was 0%, 20% and 30% (vol.). The effect of the initial pressure and of the Hydrogen content on the laminar burning velocity and the Markstein length has been evaluated: the relative weight and mutual interaction has been assessed of the two controlling parameters. Analysis has been carried out of the flame instability, expressed in terms of the critical radius for the onset of cellularity, as a function of the operating conditions.

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Section: Laminar Burning Propertiessupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Burning Behaviour of High-Pressure CH4-H2-Air Mixtures

Moccia

D'Alessio

2013

Energies

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“…Andrews and Bradley (1) , Metghalchi and Keck (2) , Iijima and Takeno (3) , and Hill et al (4) investigated the effects of the pressure on the laminar burning velocity of the spherically propagating flame. Kobayashi et al (5) studied the laminar burning velocity and the flame instabilities at elevated pressures.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pressure on Burning Velocity and Instabilities of Propane-Air Premixed Flames

Kitagawa

2005

JSME international journal. Ser. B, Fluids and thermal engineer

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Spherically propagating laminar flames at elevated pressures in a large volume bomb were studied for propane-air mixtures. The effects of the initial mixture pressure on the burning velocity and flame instabilities were investigated varying the initial pressure from 0.10 to 0.50 MPa. The Markstein number decreased with the increase in the initial pressure. The burning velocities at elevated pressures are affected not only by the change in the unstretched burning velocity but also by the variation in the Markstein number, or the variation in the sensitivity of the burning velocity to the flame stretch. The flame with a low Markstein number was unstable. Cellular flame structure developed earlier in such cases. Cellular structure accelerated the flame propagation. The burning velocity was affected by the flame instabilities in addition to the above two factors.

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“…The solid symbols in Figure 5 denote stretchfree burning velocities (or rather, burning velocities that were corrected to account for the effects of the flame stretch rate), as measured by Taylor [16], Vagelopoulos et al [17], Kwon and Faeth [18] and Verhelst et al [19]. The empty symbols denote other measurements that did not take stretch rate effects into account, as reported by Liu and MacFarlane [20], Milton and Keck [21], Iijima and Takeno [22] and Koroll et al [23]. These experiments result in consistently higher burning velocities, with the difference increasing for leaner mixtures.…”

Section: Hydrogen Specificationsmentioning

confidence: 99%

“…Laminar burning velocities plotted against air-to-fuel equivalence ratio, for NTP hydrogen-air flames [7]. The experimentally derived correlations are from Liu and MacFarlane [20], Milton and Keck [21], Iijima and Takeno [22] and Koroll et al [23]. Other experimental data are from Taylor [16], Vagelopoulos et al [17], Kwon and Faeth [18] and Verhelst et al [19].…”

Section: Hydrogen Specificationsmentioning

confidence: 99%

Use of Hydrogen-Methane Blends in Internal Combustion Engines

Çeper¹

2012

Hydrogen Energy - Challenges and Perspectives

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Effects of temperature and pressure on burning velocity

Cited by 221 publications

References 14 publications

Burning Behaviour of High-Pressure CH4-H2-Air Mixtures

Burning Behaviour of High-Pressure CH4-H2-Air Mixtures

Effects of Pressure on Burning Velocity and Instabilities of Propane-Air Premixed Flames

Use of Hydrogen-Methane Blends in Internal Combustion Engines

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