LES of the Sydney piloted spray flame series with the PFGM/ATF approach and different sub-filter models

Rittler, Andreas; Proch, Fabian; Kempf, Andreas

doi:10.1016/j.combustflame.2014.11.025

Cited by 71 publications

(34 citation statements)

References 45 publications

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“…(7) ) and an algebraic model ( Eq. (8) ) have been used for the SGS variances of mixture fraction and progress variable respectively, following the approach in [15] .…”

Section: Target Cases and Modeling Approachmentioning

confidence: 99%

Numerical study of the multi-flame structure in spray combustion

Roekaerts

2017

Proceedings of the Combustion Institute

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“…(7) ) and an algebraic model ( Eq. (8) ) have been used for the SGS variances of mixture fraction and progress variable respectively, following the approach in [15] .…”

Section: Target Cases and Modeling Approachmentioning

confidence: 99%

Numerical study of the multi-flame structure in spray combustion

Roekaerts

2017

Proceedings of the Combustion Institute

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“…The simulations were performed using the PsiPhi code, which has been validated extensively for gas combustion [17,18], coal combustion [9,12] and spray combustion [19]. The generalised Favre filtered governing equations were solved for mass, momentum, species mass fraction and enthalpy.…”

Section: Gas Phasementioning

confidence: 99%

Large Eddy Simulation of a 100 kWth swirling oxy-coal furnace

Franchetti

Marincola

Navarro‐Martinez

et al. 2016

Fuel

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Large Eddy Simulation (LES) has been applied to the swirling 100 kW th OXYCOAL-AC test facility of Aachen University. A set of models to represent devolatilisation, volatile combustion, char combustion and radiation for oxy-coal combustion in an LES framework has been implemented and tested. A qualitative analysis of the flow behaviour and the overall coal combustion processes occurring within the furnace was made. The LES results for the flow field were compared to axial and tangential mean velocity measurements, showing good agreement, particularly in the upstream regions of the flame. The LES results were also compared to oxygen concentrations and gas temperature. Overall good agreement was observed in the upstream central regions of the flame, whilst downstream the LES overestimated the combustion rates. The results show the potential of using LES for more complex oxy-coal combustion burners and opens the way for applications to industrial furnaces.

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“…Nevertheless, as analyzed in [16] for one-dimensional flames propagating in droplet mists, the inclusion of the evaporative cooling is quite relevant in the spray combustion modeling. Yet the importance of the proper modeling of the turbulence-flame interaction is a well known topic in the spray combustion community [1,4,[6][7][8][9][10]13,[17][18][19][20][21]. In view of the application of the artificially thickened flame (ATF) approach, many works have been using a similar value for the exponent of the power-law function used to model the flame surface wrinkling (FSW), namely 0.5.…”

Section: Introductionmentioning

confidence: 99%

“…The ATF model stands out among methods based on deterministic approaches to characterize the turbulence-flame interaction in turbulent spray flames [9,10,17,20,21]. This model showed a great capability to predict the behavior of turbulent spray flames in the Eulerian-Eulerian two-phase flow approach (e.g., [9,17]) as well as in the Euler-Lagrangian framework (e.g., [10,20,21]). Initially proposed to model laminar premixed flames [26], the ATF was gradually expanded to address turbulent premixed [27,28] and stratified flames [29].…”

Section: Introductionmentioning

confidence: 99%

Investigations of Evaporative Cooling and Turbulence Flame Interaction Modeling in Ethanol Turbulent Spray Combustion Using Tabulated Chemistry

Filho

Dreßler

Hosseinzadeh

et al. 2019

Fluids

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Evaporative cooling effects and turbulence flame interaction are analyzed in the large eddy simulation (LES) context for an ethanol turbulent spray flame. Investigations are conducted with the artificially thickened flame (ATF) approach coupled with an extension of the mixture adaptive thickening procedure to account for variations of enthalpy. Droplets are tracked in a Euler–Lagrangian framework, in which an evaporation model accounting for the inter-phase non-equilibrium is applied. The chemistry is tabulated following the flamelet generated manifold (FGM) method. Enthalpy variations are incorporated in the resulting FGM database in a universal fashion, which is not limited to the heat losses caused by evaporative cooling effects. The relevance of the evaporative cooling is evaluated with a typically applied setting for a flame surface wrinkling model. Using one of the resulting cases from the evaporative cooling analysis as a reference, the importance of the flame wrinkling modeling is studied. Besides its novelty, the completeness of the proposed modeling strategy allows a significant contribution to the understanding of the most relevant phenomena for the turbulent spray combustion modeling.

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LES of the Sydney piloted spray flame series with the PFGM/ATF approach and different sub-filter models

Cited by 71 publications

References 45 publications

Numerical study of the multi-flame structure in spray combustion

Numerical study of the multi-flame structure in spray combustion

Large Eddy Simulation of a 100 kWth swirling oxy-coal furnace

Investigations of Evaporative Cooling and Turbulence Flame Interaction Modeling in Ethanol Turbulent Spray Combustion Using Tabulated Chemistry

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