Progress in Large Eddy Simulation of High Speed Turbulent Mixing and Reaction

Nik, Mehdi B.; Mohebbi, Mahdi; Sheikhi, M. Reza H.; Givi, Peyman

doi:10.2514/6.2009-133

Cited by 5 publications

(14 citation statements)

References 55 publications

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“…Therefore, LES is a very attractive option for modeling the complex flow phenomena present in the propulsion system of a hypersonic vehicle. Nik et al [153] summarize these issues well. They note that "the physics of high-speed combustion is rich with many complexities.…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

“…The angle brackets and overbars denote filtered value and time average, respectively. Simulation I uses fixed coefficients, and simulation II uses a dynamic model as described in [153]. By examining the figures, it is seen that the dynamic model provides better agreement for velocity, whereas the average helium mass fraction is better predicted using fixed coefficients.…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

“…The flowfield was initialized to the inlet-averaged filtered values. Other details of the computation are given in [153].…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

“…The critical element in successful LES is the accurate modeling of the subgrid scale variables. The filtered density function (FDF) methodology has been effective in providing this closure [153,156,157]. The FDF is essentially the PDF of the subgrid scale (SGS) variables.…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

“…A simple form of this FMDF, the scalar FMDF (SFMDF) has been developed and is currently being used to model a high-speed mixing flow. Details of the formulation of the method and its application are given by Nik et al [153]. Using the SFMDF methodology, the LES of the coaxial nozzle assembly of Cutler et al [130] was carried out.…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

See 4 more Smart Citations

Methods for Prediction of High-Speed Reacting Flows in Aerospace Propulsion

Drummond

2014

AIAA Journal

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Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

“…The flowfield was initialized to the inlet-averaged filtered values. Other details of the computation are given in [153].…”

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

Section: Les/filtered Density Function Methods For High-speed Reacmentioning

confidence: 99%

See 3 more Smart Citations

Methods for Prediction of High-Speed Reacting Flows in Aerospace Propulsion

Drummond

2014

AIAA Journal

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Compressible Scalar Filtered Mass Density Function Model for High-Speed Turbulent Flows

Banaeizadeh

Jaberi

2011

AIAA Journal

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The scalar filtered mass density function model is further extended and employed for large-eddy simulations of high-speed turbulent mixing and reacting flows. The model is implemented through a hybrid mathematical/ computational methodology. In this methodology, the filtered compressible Navier-Stokes equations in a curvilinear coordinate system are solved with a generalized, high-order, multiblock, finite difference scheme for the turbulent velocity and pressure. However, the scalar mixing and combustion are computed with the compressible scalar filtered mass density function. The pressure effect in the energy equation, as needed in high-speed flows, is included in the filtered mass density function formulation. The new compressible large-eddy simulation/filtered mass density function model is used for the simulations of flows in a rapid compression machine, in a shock tube and in a supersonic coaxial jet. The numerical results indicate that the model is able to correctly capture the scalar mixing in compressible subsonic and supersonic turbulent flows.

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Large Eddy Simulation of Turbulent Combustion via Filtered Mass Density Function

Banaeizadeh

Jaberi³

2011

9th Annual International Energy Conversion Engineering Conference

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This paper provides a brief review of the scalar filtered mass density function (FMDF) model. The FMDF is a subgrid-scale probability density function (PDF) model for large eddy simulation (LES) of turbulent combustion and is obtained by the solution of a set of stochastic differential equations by a Lagrangian Monte Carlo method. The applicability and the validity of the LES/FMDF are established by simulating various low and high speed, single-and two-phase turbulent reacting flows. The LES/FMDF results are found to be consistent and comparable to DNS and experimental results for different flows.

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Progress in Large Eddy Simulation of High Speed Turbulent Mixing and Reaction

Cited by 5 publications

References 55 publications

Methods for Prediction of High-Speed Reacting Flows in Aerospace Propulsion

Methods for Prediction of High-Speed Reacting Flows in Aerospace Propulsion

Compressible Scalar Filtered Mass Density Function Model for High-Speed Turbulent Flows

Large Eddy Simulation of Turbulent Combustion via Filtered Mass Density Function

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