Measurement of laminar burning speeds and Markstein lengths using a novel methodology

Tahtouh, Toni; Halter, Fabien; Mounaïm‐Rousselle, Christine

doi:10.1016/j.combustflame.2009.03.013

Cited by 141 publications

(78 citation statements)

References 25 publications

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“…In addition to and 0.31 m.s -1 , for sets A, B, C and D respectively. Given the possible errors present within the measurements, these average results are in close approximation to the unperturbed laminar burning velocities presented in literature [18][19][20][21], indicating that this region of the flame does not experience any enhancement to the rate of propagation. The following section of the flame (section 2), identifiable by its close proximity to the flame tip, exhibits fluctuations in measured burning velocity, often producing negative values.…”

Section: Observations Of the Interactionsupporting

confidence: 50%

Experimental Measurement of Local Burning Velocity Within a Rotating Flow

Long

Hargrave

2011

Flow Turbulence Combust

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Section: Observations Of the Interactionsupporting

confidence: 50%

Experimental Measurement of Local Burning Velocity Within a Rotating Flow

Long

Hargrave

2011

Flow Turbulence Combust

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“…However, results from [4], even if compatible at large times/radii, do not as fairly match neither DNS nor results from [8]. Estimation of S C or k is very sensitive to the smoothing procedure used to compute dR/dt from raw data [19] and also to measurement frequency. This may be the main cause of the observed discrepancies.…”

Section: Laminar Case Post-processingmentioning

confidence: 79%

“…For our 3D EEM simulation, the numerical value of the neutral wavenumber K n is depending on the numerical values of the density contrast α and of the first Markstein length (equation (19). To obtain a suitable numerical value for the Markstein length L u , we plot on figure 7 consumption velocity S C (equation (3)) vs mean flame stretch k (equation (7)) for experimental results from [4] and from present DNS calculation.…”

Section: Resultsmentioning

confidence: 99%

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Assessment of the Evolution Equation Modelling approach for three-dimensional expanding wrinkled premixed flames

Albin

D'Angelo

2012

Combustion and Flame

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. Assessment of the Evolution Equation Modelling approach for threedimensional expanding wrinkled premixed flames. Combustion and Flame, Elsevier, 2012, 159 (5), pp.1932-1948. <10.1016/j.combustflame.2011 AbstractDirect Numerical Simulations (DNS), Evolution Equation Modelling (EEM) and Experimental results from the literature (EXP) are presented and analyzed for an expanding propane/air flame. DNS results are obtained thanks to the in-house finite-difference code HAllegro. Computed (DNS/EEM) and measured (EXP) equivalent radii R P and R S , mean stretch k and consumption velocity S C , as well as sample front shapes, are compared using to the same post-processing methodology. Small perturbations in the EEM input parameters induce comparatively small shifts in the compared results, showing the robustness of the approach. When slightly adapting only one O(1) parameter for the EEM strategy (the effective turbulent forcing amplitude felt by the flame), DNS and EEM show quite fair agreement one with the other and also with EXP, except for one of the experiments at early times. In the context of expanding flames, this validated EEM methodology can constitute a reliable tool to compute realisticly large sized flames.

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“…At least two different approaches have been proposed in the literature [25,26] for an analytical solution, allowing to obtain both the unstretched flame speed and the Markstein length, directly from the time evolution of the flame radius. Following the method of Tahtouh et al [26], Equations (1) and (4) can be rearranged as:…”

Section: Data Analysis and Processingmentioning

confidence: 99%

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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Measurement of laminar burning speeds and Markstein lengths using a novel methodology

Cited by 141 publications

References 25 publications

Experimental Measurement of Local Burning Velocity Within a Rotating Flow

Experimental Measurement of Local Burning Velocity Within a Rotating Flow

Assessment of the Evolution Equation Modelling approach for three-dimensional expanding wrinkled premixed flames

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

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