Modeling of eddy characteristic time in LES for calculating turbulent diffusion flame

Yaga, Minoru; Endo, Hidenori; Yamamoto, Tsuyoshi; Aoki, Hideyuki; Miura, Takatoshi

doi:10.1016/s0017-9310(01)00329-5

Cited by 31 publications

(8 citation statements)

References 8 publications

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“…They employed a value of 0.23 for their LES study. The scalar turbulent Schmidt numbers correspond to the combustion studies on turbulent diffusion flame recently performed by Yaga et al [32] and confirmed through DNS data by Jiménez et al [19].…”

Section: Sgs Turbulence Modelssupporting

confidence: 83%

Flickering Behavior of Turbulent Buoyant Fires Using Large-Eddy Simulation

Cheung

Yeoh

Cheung

et al. 2007

Numerical Heat Transfer, Part A: Applications

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A numerical study investigating the flickering behavior of a turbulent buoyant fire is conducted using large-eddy simulation to examine coupled turbulence, combustion, soot chemistry, and radiation effects. The three-dimensional, Favre-filtered, compressible mass, momentum, energy, and mixture fraction and its scalar variance conservation equations are closed using the Smagorinsky subgrid-scale (SGS) turbulence model. A two-stage predictor-corrector methodology for low-Mach-number compressible flows is adopted. Formation of large-scale vortical structures is well captured, with the predicted puffing frequency agreeing closely with experimentally determined frequencies. Comparisons of instantaneous, mean, and root-mean-square quantities also show qualitative agreement against other experimental data.

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Section: Sgs Turbulence Modelssupporting

confidence: 83%

Flickering Behavior of Turbulent Buoyant Fires Using Large-Eddy Simulation

Cheung

Yeoh

Cheung

et al. 2007

Numerical Heat Transfer, Part A: Applications

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“…Similar to the resolved scale, the thermal and scalar flux vectors due to SGS motions are also correlated according to the turbulent Prandtl and Schmidt numbers. Considering the largescale pool fire as a fully turbulent diffusion flame, the turbulent Prandtl and all scalar turbulent Schmidt numbers are prescribed values of 0.3 [33].…”

Section: Mathematical Formulationmentioning

confidence: 99%

A fully-coupled simulation of vortical structures in a large-scale buoyant pool fire

Cheung

Yeoh

2009

International Journal of Thermal Sciences

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“…This means that both k and ε are estimated in the same manner. In order to supply more accurate information on the turbulent timescale (known also as an eddy turnover time), a new formula [18] was introduced in the LES performed in this study, given as…”

Section: Mathematical Formulation and Numerical Approachmentioning

confidence: 99%

Large Eddy Simulation of Diesel Fuel Injection and Mixing in a HSDI Engine

Jagus

Jiang

2011

Flow Turbulence Combust

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The paper aims to assess the performance of large eddy simulation (LES) in predicting the unsteady reacting flows in internal combustion engines. The incompatibility due to the turbulence dissipation was avoided in the k-equation LES formulation. Two versions of the LES have been tested with different filtering. The cell-specific filtering was found to give realistic prediction of the instantaneous temperature and pressure field during the combustion process. The coupling of combustion heat release, temperature field and turbulent flow field was found to be strong in the LES predicted flow and combustion fields which showed wrinkled flame structures. The formulation gives improved agreement with available experimental data.

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Modeling of eddy characteristic time in LES for calculating turbulent diffusion flame

Cited by 31 publications

References 8 publications

Flickering Behavior of Turbulent Buoyant Fires Using Large-Eddy Simulation

Flickering Behavior of Turbulent Buoyant Fires Using Large-Eddy Simulation

A fully-coupled simulation of vortical structures in a large-scale buoyant pool fire

Large Eddy Simulation of Diesel Fuel Injection and Mixing in a HSDI Engine

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