Reduction of Large Detailed Kinetic Mechanisms: Application to Kerosene/Air Combustion

Luche, Jocelyn; Reuillon, M.; Boettner, Jean-Claude; Cathonnet, M.

doi:10.1080/00102200490504571

Cited by 52 publications

(28 citation statements)

References 16 publications

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“…Chemical reactions are computed using a reduced two-step scheme for kerosene/air premixed flames [44]: six species are considered: N 2 , O 2 , CO, CO 2 , H 2 O and kerosene. This scheme matches the results of the full scheme of Luche et al [45] for kerosene/air flames in terms of flame speeds and adiabatic flame temperatures within an extended range of equivalence ratios (0.6 ≤ φ ≤ 2.0), pressures (1.0 ≤ P ≤ 12.0 atm) and fresh gas temperatures (300 ≤ T f ≤ 700 K). Liquid kerosene is injected using the mesoscopic Eulerian formalism [46][47][48][49][50], where the spray is considered as a continuous phase.…”

Section: Numerical Setupsupporting

confidence: 60%

LES Study of Transverse Acoustic Instabilities in a Swirled Kerosene/Air Combustion Chamber

Ghani

Poinsot

Gicquel

et al. 2015

Flow Turbulence Combust

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LES is used to study self-excited transverse modes in an atmospheric, square combustor (p = 1 bar). Simulations over a range of different mass flow rates show that transverse modes are present for all cases and exhibit varying RMS pressure amplitudes up to 0.4 bar. Analysis of LES results shows that transverse modes are due to a lock-in mechanism between an hydrodynamic unstable mode typical of swirling flows (the PVC mode or Processing Vortex Core) and the cavity modes. A control method using damping compliant walls (named DCWs) is applied to control the acoustic mode in the LES and to characterize the PVC in the absence of acoustic forcing. This method shows that the highest pressure oscillations appear when the PVC frequency is close to the frequency of the first transverse acoustic mode. A 3D Helmholtz solver is then used to predict the stability limits obtained by 3D LES. To capture transverse modes, a new flame transfer function (FTF) formulation is derived where local heat release perturbations are controlled by the orthoradial acoustic velocity fluctuations. The FTF is measured in the LES and when it is included in the Helmholtz solver, it allows to recover the stability zones observed in the LES.

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Section: Numerical Setupsupporting

confidence: 60%

LES Study of Transverse Acoustic Instabilities in a Swirled Kerosene/Air Combustion Chamber

Ghani

Poinsot

Gicquel

et al. 2015

Flow Turbulence Combust

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“…An early approach was introduced by Frenklach et al (Frenklach et al 1986;Frenklach 1991) who investigated the elimination of species from a detailed combustion mechanism where the aim was the accurate simulation of times-toignition and temperature profiles. Several reduction methods, based on similar principles but differing in details, have been developed using this integral flux approach within the literature (Nilsson et al 1999;Németh et al 2002;Soyhan et al 2002;Luche et al 2004;Mauersberger 2005). The elimination of these reactions also meant the elimination of some species.…”

Section: Species Removal Via the Inspection Of Ratesmentioning

confidence: 99%

Analysis of Kinetic Reaction Mechanisms

Turányi¹,

Tomlin²

2014

195

172

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“…In the present work, surrogate kerosene consisting of n-decane (76.7 wt %), n-propyl benzene (13.2 wt %), and propyl cyclohexane (10.1 wt %) was investigated for their laminar flame speeds using a high-pressure Bunsen flame burner. 43,44 This composition of surrogate for kerosene was initially referred to in the work of Dagaut et al 8 and Luche et al, 6 who developed a skeletal kinetic mechanism targeting to emulate the combustion properties of commercial kerosene fuels. However, to the best of our knowledge, no measurements of laminar flame speeds were performed and compared with commercial kerosene fuels for this three-component surrogate kerosene.…”

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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Reduction of Large Detailed Kinetic Mechanisms: Application to Kerosene/Air Combustion

Cited by 52 publications

References 16 publications

LES Study of Transverse Acoustic Instabilities in a Swirled Kerosene/Air Combustion Chamber

LES Study of Transverse Acoustic Instabilities in a Swirled Kerosene/Air Combustion Chamber

Analysis of Kinetic Reaction Mechanisms

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

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