Flame resolved simulation of a turbulent premixed bluff-body burner experiment. Part I: Analysis of the reaction zone dynamics with tabulated chemistry

Proch, Fabian; Domingo, Pascale; Vervisch, Luc; Kempf, Andreas

doi:10.1016/j.combustflame.2017.02.011

Cited by 53 publications

(51 citation statements)

References 89 publications

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“…A detailed flame resolved simulation database [19,20] of the Cambridge setup of a lean methaneair premixed turbulent annular jet flame stabilized behind a bluff-body burner is examined. This flame has been investigated by Barlow and co-workers [16][17][18] experimentally and numerically via Large Eddy Simulations (LES) [21][22][23] .…”

Section: Flame Resolved Simulation Databasementioning

confidence: 99%

“…The two streams are embedded in a co-flow of air with a velocity of 0.4 m/s. The flame resolved simulation database examined here was generated by Proch et al [19,20] using the PsiPhi code on a grid of 1.6 billion cells with a grid resolution of 100 μm: throughout the domain. The Lewis number was unity for all species and the chemistry was tabulated with the Premixed Flamelet Generated Manifolds (PFGM) approach [24,25] .…”

Section: Flame Resolved Simulation Databasementioning

confidence: 99%

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Local entrainment velocity in a premixed turbulent annular jet flame

Cifuentes

Kempf

Dopazo

2019

Proceedings of the Combustion Institute

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The local entrainment velocity of the enstrophy interfaces of a methane-air turbulent premixed turbulent annular jet flame stabilized on a bluff-body burner has been investigated using a high-fidelity flame-resolved three-dimensional simulation. The enstrophy (inner and outer) and the scalar interfaces have been defined and characterized by their propagation speeds, V E and S d , relative to the fluid flow. Mean values (S d | c and V E | c) conditioned on the reaction progress variable c have been obtained. A thin layer (near the enstrophy interfaces) has been used to compute mean values (V E | E , S d | E , and its different contributions) conditional upon enstrophy E. At the inner interface, results indicate that S d | c > 0 and S d | E > 0 (entrainment of fresh reactants into the flame front and hot products), while V E | c < 0 and V E | E < 0 (entrainment of hot products into the reacting jet across the inner enstrophy interface). The outer enstrophy interface displays V E | E > 0 (ambient gases are predominantly entrained into the jet of reactants), which implies a lean mixture in its neighborhood. These preliminary results aim at understanding the physical mechanisms of flame anchoring, in terms of entrainments of either hot products or fresh reactants into the diffusive-reactive region. Local geometries of the inner and outer interfaces have also been examined, through the computation of joint probability density functions of the mean curvature k m and Gauss curvature k g of the iso-enstrophy surfaces, and through V E | k m , k g at the inner and outer interfaces. This information has subsequently been used to discuss the physics of how the turbulent entrainment process affects premixed flames.

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Section: Flame Resolved Simulation Databasementioning

confidence: 99%

Section: Flame Resolved Simulation Databasementioning

confidence: 99%

Local entrainment velocity in a premixed turbulent annular jet flame

Cifuentes

Kempf

Dopazo

2019

Proceedings of the Combustion Institute

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“…Here the 3D target distribution is obviously not available and neither are its factors, but its projections. In Figure 3, an example is given for a mask generated from 15 rendered images of a downsampled DNS dataset [35,36]…”

Section: The Stochastic Maskmentioning

confidence: 99%

“…The flame has been well studied experimentally [53,54] and numerically [35,36,50,55,56]. The simulation by Proch et al [35,36] was carried out on a grid with 1.6 billion cells with a resolution of 100 µm. A premixed flamelet generated manifold (PFGM) was used for combustion modelling, and the domain covered a region of 12 mm to 82 mm above the burner exit.…”

Section: The Cambridge-sandia Stratified Flame Phantommentioning

confidence: 99%

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3D Evolutionary Reconstruction of Scalar Fields in the Gas-Phase

2019

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An evolutionary reconstruction technique (ERT) was developed for three-dimensional (3D) reconstruction of luminescent objects, in particular turbulent flames for the first time. The computed tomography (CT) algorithm is comprised of a genetic algorithm (GA) and a ray-tracing software. To guide the reconstruction process, a mask is introduced. It uses a Metropolis algorithm (MA) to sample locations where specific genetic operators can be applied. Based on an extensive parameter study, performed on several types of phantoms, the ability of our algorithm for 3D reconstructions of fields with varying complexities is demonstrated. Furthermore, it was applied to three experiments, to reconstruct the instantaneous chemiluminescence field of a bunsen flame, a highly turbulent swirl flame and the turbulent Cambridge-Sandia stratified flame. Additionally, we show direct and quantitative comparison to an advanced computed tomography of chemiluminescence (CTC) method that is based on an algebraic reconstruction technique (ART). The results showed good agreement between CTC and ERT using both phantom data from flame simulations, and experimental data.

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Fully Resolved Auto-Igniting Transient Jet Flame Simulation

Inanc

2021

High Performance Computing in Science and Engineering '19

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Flame resolved simulation of a turbulent premixed bluff-body burner experiment. Part I: Analysis of the reaction zone dynamics with tabulated chemistry

Cited by 53 publications

References 89 publications

Local entrainment velocity in a premixed turbulent annular jet flame

Local entrainment velocity in a premixed turbulent annular jet flame

3D Evolutionary Reconstruction of Scalar Fields in the Gas-Phase

Fully Resolved Auto-Igniting Transient Jet Flame Simulation

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