Tabulated chemistry approach for diluted combustion regimes with internal recirculation and heat losses

Lamouroux, Jean; Ihme, Matthias; Fiorina, Benoît; Gicquel, Olivier

doi:10.1016/j.combustflame.2014.01.015

Cited by 55 publications

(56 citation statements)

References 39 publications

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“…59,68 The slight disagreement observed for the CR model could be related to the adopted tabulated approach, which is not sensitive to internal burned gas recirculation, for instance, by including a dilution parameter. Several works, in fact, have highlighted the importance of dilution in non-equilibrium chemistry for systems with gas recirculation, 69 but the addition of dilution parameters as extra CV would imply higher table dimensions and central processing unit (CPU) costs. Furthermore, the look-up table was built with constantenthalpy flamelets.…”

Section: Articlementioning

confidence: 99%

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

et al. 2018

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Section: Articlementioning

confidence: 99%

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

et al. 2018

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“…These simulations can therefore be performed over a wide range of conditions, e.g. Lamouroux et al (2014) stored flamelets using the tabulated chemistry approach. The results of the calculations are stored in databases, and these empirical manifolds are used for the simulation of two-and three-dimensional flames, when direct simulation would require far more computational time.…”

Section: Flamelet-generated Manifoldsmentioning

confidence: 99%

Analysis of Kinetic Reaction Mechanisms

Turányi¹,

Tomlin²

2014

195

172

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“…Several numerical studies have investigated this setup [6][7][8][9][10][11] without much attention to the combustor heat transfer mechanisms. However, heat losses due to wall heat transfer and radiation impact flame stabilization [12][13][14][15], gas temperature, and consequently gaseous pollutant emissions [16,17] and soot production. Numerical simulations of combustors must therefore account for these heat losses either through experimental or computed boundary conditions e.g.…”

Section: Introductionmentioning

confidence: 99%

Assessment of External Heat Transfer Modeling of a Laboratory-Scale Combustor: Effects of Pressure-Housing Environment and Semi-Transparent Viewing Windows

Rodrigues

Gicquel

Darabiha

et al. 2018

Journal of Engineering for Gas Turbines and Power

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Many laboratory-scale combustors are equipped with viewing windows to allow for characterization of the reactive flow. Additionally, pressure housing is used in this configuration to study confined pressurized flames. Since the flame characteristics are influenced by heat losses, the prediction of wall temperature fields becomes increasingly necessary to account for conjugate heat transfer (CHT) in simulations of reactive flows. For configurations similar to this one, the pressure housing makes the use of such computations difficult in the whole system. It is, therefore, more appropriate to model the external heat transfer beyond the first set of quartz windows. The present study deals with the derivation of such a model, which accounts for convective heat transfer from quartz windows external face cooling system, free convection on the quartz windows 2, quartz windows radiative properties, radiative transfer inside the pressure housing, and heat conduction through the quartz window. The presence of semi-transparent viewing windows demands additional care in describing its effects in combustor heat transfers. Because this presence is not an issue in industrial-scale combustors with opaque enclosures, it remains hitherto unaddressed in laboratory-scale combustors. After validating the model for the selected setup, the sensitivity of several modeling choices is computed. This enables a simpler expression of the external heat transfer model that can be easily implemented in coupled simulations.

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Tabulated chemistry approach for diluted combustion regimes with internal recirculation and heat losses

Cited by 55 publications

References 39 publications

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

Numerical Investigation of Moderate or Intense Low-Oxygen Dilution Combustion in a Cyclonic Burner Using a Flamelet-Generated Manifold Approach

Analysis of Kinetic Reaction Mechanisms

Assessment of External Heat Transfer Modeling of a Laboratory-Scale Combustor: Effects of Pressure-Housing Environment and Semi-Transparent Viewing Windows

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