2017
DOI: 10.1007/s10494-017-9823-0
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Assessment of Finite Rate Chemistry Large Eddy Simulation Combustion Models

Abstract: Large Eddy Simulations (LES) of a swirl-stabilized natural gas-air flame in a laboratory gas turbine combustor is performed using six different LES combustion models to provide a head-to-head comparative study. More specifically, six finite rate chemistry models, including the thickened flame model, the partially stirred reactor model, the approximate deconvolution model and the stochastic fields model have been studied. The LES predictions are compared against experimental data including velocity, temperature… Show more

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Cited by 53 publications
(39 citation statements)
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References 79 publications
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“…It is possible that the grid resolution at this location needs further refinement to capture this effect at the resolved level. Similar overpredictions were observed using the TF approach with a similar grid resolution in [71]. While an improved accuracy was shown for TF model in [70] using 120 M cells increasing non-negligible computational cost, this may not be affordable for routine in-house calculations in industries.…”
Section: Siemens Combustor For Energy Generationsupporting
confidence: 64%
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“…It is possible that the grid resolution at this location needs further refinement to capture this effect at the resolved level. Similar overpredictions were observed using the TF approach with a similar grid resolution in [71]. While an improved accuracy was shown for TF model in [70] using 120 M cells increasing non-negligible computational cost, this may not be affordable for routine in-house calculations in industries.…”
Section: Siemens Combustor For Energy Generationsupporting
confidence: 64%
“…The Siemens configuration has been investigated numerically using different LES combustion modelling, including TPDF/ESF [68], partially stirred reactor (PaSR) [69], TF [70,71], FlaRe [22], eddy dissipation, fractal and approximate decomposition models [71]. Comparisons among different modelling techniques are also shown in [22,71]. The combustion conditions for the Siemens configuration were noted in [67] to lie between thin and distributed reaction zones regimes of the turbulent combustion diagram [72].…”
Section: Siemens Combustor For Energy Generationmentioning
confidence: 99%
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“…6a suggests that the stagnation point is located at about x ≃ 150 and r ≃ −25. This off-centre location implies the presence of precessing CVC, also noted in [21], and possibly its bias on the measured statistics because the data may not have been collected for a long enough period. This observation is supported by the measured radial velocity V = 0 along the centreline (discussed below).…”
Section: Resultsmentioning
confidence: 99%
“…Sub-grid scale (SGS) combustion models are required to account for the effects of unresolved fluctuations in flow and composition fields or in general to account for turbulence-chemistry interactions (TCI). FR-TCI models in LES, namely FR-TCI-SGS models, are those with no assumption about the flow or flame, attempting to model the low-pass filtered production/consumption rates directly [1]. Some examples of FR-TCI-SGS models for non-premixed flames are the transported PDF (TPDF) models [2,3], the Partially Stirred Reactor (PaSR) model [4], the Eddy Dissipation Concept (EDC) [5], the "Laminar FR model" or "no model" approach [6], the conditional moment closure (CMC) models [7], and the Scale Similarity (SS) models [8,9].…”
Section: Introductionmentioning
confidence: 99%