Large eddy simulation of bluff-body stabilized flames using a multi-environment filtered density function model

2011 ◽  
Vol 33 (1) ◽  
pp. 1347-1353 ◽  
Author(s):  
W. Zhao ◽  
C. Zhang ◽  
C. Chen
Keyword(s):  
Large Eddy Simulation ◽  
Density Function ◽  
Bluff Body ◽  
Function Model ◽  
Filtered Density Function ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Stabilized Flames

Implementation of a hybrid Lagrangian filtered density function–large eddy simulation methodology in a dynamic adaptive mesh refinement environment

2021 ◽  
Vol 33 (4) ◽  
pp. 045126
Author(s):  
Laura Pereira de Castro ◽  
Abgail Paula Pinheiro ◽  
Vitor Vilela ◽  
Gabriel Marcos Magalhães ◽  
Ricardo Serfaty ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Density Function ◽  
Adaptive Mesh Refinement ◽  
Mesh Refinement ◽  
Adaptive Mesh ◽  
Filtered Density Function ◽  
Simulation Methodology ◽  
Eddy Simulation ◽  
Large Eddy

Scalar Mixing Study at High-Schmidt Regime in a Turbulent Jet Flow Using Large-Eddy Simulation/Filtered Density Function Approach

2015 ◽  
Vol 138 (2) ◽  
Author(s):  
Juan M. Mejía ◽  
Farid Chejne ◽  
Alejandro Molina ◽  
Amsini Sadiki
Keyword(s):  
Large Eddy Simulation ◽  
Density Function ◽  
Mixing Time ◽  
Passive Scalar ◽  
Low Velocity ◽  
Splitting Algorithm ◽  
Water Stream ◽  
Filtered Density Function ◽  
Eddy Simulation ◽  
Large Eddy

Mixing of a passive scalar in a high-Schmidt turbulent round jet was studied using large-eddy simulation (LES) coupled to filtered density function (FDF). This coupled approach enabled the solution of the continuity, momentum, and scalar (concentration) transport equations when studying mixing in a confined turbulent liquid jet discharging a conserved scalar (rhodamine B) into a low-velocity water stream. The Monte Carlo method was used for solving the FDF transport equation and controlling the number of particles per cell (NPC) using a clustering and splitting algorithm. A sensibility analysis of the number of stochastic particles per cell as well as the influence of the subgrid-scale (SGS) mixing time constant were evaluated. The comparison of simulation results with experiments showed that LES/FDF satisfactorily reproduced the behavior observed in this flow configuration. At high radial distances, the developed superviscous layer generates an intermittency phenomenon leading to a complex, anisotropic behavior of the scalar field, which is difficult to simulate with the conventional and advanced SGS models required by LES. This work showed a close agreement with reported experimental data at this superviscous layer following the FDF approach.

Velocity-scalar filtered density function for large eddy simulation of turbulent flows

2003 ◽  
Vol 15 (8) ◽  
pp. 2321-2337 ◽  
Author(s):  
M. R. H. Sheikhi ◽  
T. G. Drozda ◽  
P. Givi ◽  
S. B. Pope
Keyword(s):  
Large Eddy Simulation ◽  
Density Function ◽  
Turbulent Flows ◽  
Filtered Density Function ◽  
Eddy Simulation ◽  
Large Eddy
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