Large-eddy simulation of methanol pool fires using an accelerated stochastic fields method

2016 ◽  
Vol 173 ◽  
pp. 89-98 ◽  
Author(s):  
Mehdi Jangi ◽  
Mohammednoor Altarawneh ◽  
Bogdan Z. Dlugogorski
Keyword(s):  
Large Eddy Simulation ◽  
Pool Fires ◽  
Stochastic Fields ◽  
Eddy Simulation ◽  
Large Eddy

Prediction of Premixed Flame Dynamics Using Large Eddy Simulation With Tabulated Chemistry and Eulerian Stochastic Fields

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Alexander Avdonin ◽  
Alireza Javareshkian ◽  
Wolfgang Polifke
Keyword(s):  
Large Eddy Simulation ◽  
Time Series Data ◽  
Series Data ◽  
Combustion Model ◽  
Stochastic Fields ◽  
Progress Variable ◽  
Eddy Simulation ◽  
Flame Dynamics ◽  
Tabulated Chemistry ◽  
Large Eddy

Abstract This paper demonstrates that a large Eddy simulation (LES) combustion model based on tabulated chemistry and Eulerian stochastic fields can successfully describe the flame dynamics of a premixed turbulent swirl flame. The combustion chemistry is tabulated from one-dimensional burner-stabilized flamelet computations in dependence on progress variable and enthalpy. The progress variable allows to efficiently include a detailed reaction scheme, while the dependence on enthalpy describes the effect of heat losses on the reaction rate. The turbulence-chemistry interaction is modeled by eight Eulerian stochastic fields. An LES of a premixed swirl burner with a broadband velocity excitation is performed to investigate the flame dynamics, i.e., the response of heat release rate to upstream velocity perturbations. In particular, the flame impulse response and the flame transfer function (FTF) are identified from LES time series data. Simulation results for a range of power ratings are in good agreement with the experimental data.

Large eddy simulation of buoyant turbulent pool fires

2002 ◽  
Vol 29 (1) ◽  
pp. 259-266 ◽  
Author(s):  
Y. Xin ◽  
J. Gore ◽  
K.B. Mcgrattan ◽  
R.G. Rehm ◽  
H.R. Baum
Keyword(s):  
Large Eddy Simulation ◽  
Pool Fires ◽  
Eddy Simulation ◽  
Large Eddy
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