High-resolution LES of a starting jet

Inanc, E.; Nguyen, Minh Tien; Kaiser, Sebastian

doi:10.1016/j.compfluid.2016.10.022

Cited by 17 publications

(4 citation statements)

References 67 publications

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“…The flame-resolved simulation was performed using the in-house solver PsiPhi [20,36,56,69,70] in a computational domain of 113 × 120 × 120 mm 3 (1130 × 1200 × 1200 grid nodes) on an equidistant Cartesian A power-law velocity profile was imposed at the inlet. The inflow turbulence was generated by the method developed by Klein et al [71] in conjunction with an efficient numerical implementation [72].…”

Section: Numerical Setupmentioning

confidence: 99%

Scalar gradient and flame propagation statistics of a flame-resolved laboratory-scale turbulent stratified burner simulation

Inanc

Chakraborty

2022

Combustion and Flame

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Section: Numerical Setupmentioning

confidence: 99%

Scalar gradient and flame propagation statistics of a flame-resolved laboratory-scale turbulent stratified burner simulation

Inanc

Chakraborty

2022

Combustion and Flame

Self Cite

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“…Highly resolved low-Mach simulations with homogeneous and isotropic cartesian grids were performed with the in-house code PsiPhi [9,[19][20][21] . The convective fluxes of scalars were interpolated using a TVD-scheme, momentum by central differencing.…”

Section: Experimental and Numerical Setupmentioning

confidence: 99%

A simple post-processing method to correct species predictions in artificially thickened turbulent flames

Gruhlke

Inanc

Mercier

et al. 2021

Proceedings of the Combustion Institute

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“…The pseudo-3D SDR has lower negative skewness and excess kurtosis, while the two 1D SDR show higher kurtosis and skewness. Since high SDR values are more likely in shear layers, which are weaker in the decaying jet, the negative skewness exhibited in the decaying jet's PDF and could be inherent in other transient jets as, for example, in the starting jet [13,27,28].…”

Section: Unconditional Statisticsmentioning

confidence: 99%

Mixing and scalar dissipation rate in a decaying jet

Hua

Liu

Chen

et al. 2021

Proceedings of the Combustion Institute

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The temporal development of the mixing field in a decaying jet (Re = 50,000) was quantified by measuring mole fraction and scalar dissipation rate (SDR) in a decaying, isothermal, turbulent gaseous jet. The 2D scalar field was measured by using planar laser induced fluorescence of acetone and, with appropriate image processing, this allowed estimation of the SDR using the two in-plane components within 16% error. The instantaneous and averaged distributions of the mole fraction are reported for downstream dimensionless distances up to 7 nozzle exit diameters and 35 exit flow timescales after end of injection. With advection of the last uniform exit concentration (UEC) profile core away from the nozzle exit, a region of weak concentration arises at the decaying jet's trailing edge. Estimates made in a Lagrangian frame of reference show that the trailing edge of the jet becomes leaner, after the end of injection (AEI), faster than in the steady state, confirming the existence of an 'entrainment wave'. The normalised probability density functions of the 2D SDR at various stations and times AEI differ from a lognormal distribution at both low and high SDR values with negative skewness and positive excess kurtosis. A pseudo 3D SDR, made by including an estimate for the out of plane component, showed reduced departure from lognormal. The departure may be attributed to the disappearance of the strong shear layer associated with the absence of nozzle momentum AEI. To the authors' knowledge, this study provides the first measurements of the SDR in a decaying, isothermal turbulent jet.

show abstract

High-resolution LES of a starting jet

Cited by 17 publications

References 67 publications

Scalar gradient and flame propagation statistics of a flame-resolved laboratory-scale turbulent stratified burner simulation

Scalar gradient and flame propagation statistics of a flame-resolved laboratory-scale turbulent stratified burner simulation

A simple post-processing method to correct species predictions in artificially thickened turbulent flames

Mixing and scalar dissipation rate in a decaying jet

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