Large Eddy Simulation Based Flame Transition Modeling in a Lean Premixed Swirl Combustor

2013 ◽  
Author(s):  
Baris A. Sen ◽  
Graham Goldin ◽  
Kevin Song ◽  
Yanhu Guo ◽  
Randal G. McKinney
Keyword(s):  
Large Eddy Simulation ◽  
Swirl Combustor ◽  
Eddy Simulation ◽  
Simulation Based ◽  
Large Eddy ◽  
Lean Premixed ◽  
Transition Modeling

scholarly journals Direct Assessment of the Acoustic Scattering Matrix of a Turbulent Swirl Combustor by Combining System Identification, Large Eddy Simulation and Analytical Approaches

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
Malte Merk ◽  
Camilo Silva ◽  
Wolfgang Polifke ◽  
Renaud Gaudron ◽  
Marco Gatti ◽  
...  
Keyword(s):  
System Identification ◽  
Large Eddy Simulation ◽  
Transfer Matrix ◽  
Acoustic Scattering ◽  
Scattering Matrix ◽  
Series Data ◽  
Swirl Combustor ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Analytical Approaches

This study assesses and compares two alternative approaches to determine the acoustic scattering matrix of a premixed turbulent swirl combustor: (1) The acoustic scattering matrix coefficients are obtained directly from a compressible large eddy simulation (LES). Specifically, the incoming and outgoing characteristic waves f and g extracted from the LES are used to determine the respective transmission and reflection coefficients via System Identification (SI) techniques. (2) The flame transfer function (FTF) is identified from LES time series data of upstream velocity and heat release rate. The transfer matrix of the reactive combustor is then derived by combining the FTF with the Rankine–Hugoniot (RH) relations across a compact heat source and a transfer matrix of the cold combustor, which is deduced from a linear network model. Linear algebraic transformation of the transfer matrix consequently yields the combustor scattering matrix. In a cross-comparison study that includes comprehensive experimental data, it is shown that both approaches successfully predict the scattering matrix of the reactive turbulent swirl combustor.

Large-Eddy Simulation-Based Retrieval of Dissipation from Coherent Doppler Lidar Data

2010 ◽  
Vol 136 (1) ◽  
pp. 45-57 ◽  
Author(s):  
Raghavendra Krishnamurthy ◽  
Ronald Calhoun ◽  
Harindra Fernando
Keyword(s):  
Large Eddy Simulation ◽  
Lidar Data ◽  
Doppler Lidar ◽  
Eddy Simulation ◽  
Coherent Doppler Lidar ◽  
Simulation Based ◽  
Large Eddy

scholarly journals Large-Eddy Simulation of the lean-premixed PRECCINSTA burner with wall heat loss

2019 ◽  
Vol 37 (4) ◽  
pp. 5233-5243 ◽  
Author(s):  
P. Benard ◽  
G. Lartigue ◽  
V. Moureau ◽  
R. Mercier
Keyword(s):  
Large Eddy Simulation ◽  
Heat Loss ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Lean Premixed
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