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Large Eddy Simulation and Experimental Analysis of Combustion Dynamics in a Gas Turbine Burner

Moëll, Daniel LU ; Lantz, Andreas LU ; Bengtson, Karl; Lörstad, Daniel LU ; Lindholm, Annika LU and Bai, Xue Song LU (2019) In Journal of Engineering for Gas Turbines and Power 141(7).
Abstract

Large eddy simulations (LES) and experiments (planar laser-induced fluorescence of the hydroxyl radical (OH-PLIF) and pressure transducer) have been carried out on a gas turbine burner fitted to an atmospheric combustion rig. This burner, from the Siemens SGT-800 gas turbine, is a low NOx, partially premixed burner, where preheat air temperature, flame temperature, and pressure drop across the burner are kept similar to engine full load conditions. The large eddy simulations are based on a flamelet-generated manifold (FGM) approach for representing the chemistry and the Smagorinsky model for subgrid turbulence. The experimental data and simulation data are in good agreement, both in terms of time averaged and time-resolved quantities.... (More)

Large eddy simulations (LES) and experiments (planar laser-induced fluorescence of the hydroxyl radical (OH-PLIF) and pressure transducer) have been carried out on a gas turbine burner fitted to an atmospheric combustion rig. This burner, from the Siemens SGT-800 gas turbine, is a low NOx, partially premixed burner, where preheat air temperature, flame temperature, and pressure drop across the burner are kept similar to engine full load conditions. The large eddy simulations are based on a flamelet-generated manifold (FGM) approach for representing the chemistry and the Smagorinsky model for subgrid turbulence. The experimental data and simulation data are in good agreement, both in terms of time averaged and time-resolved quantities. From the experiments and LES, three bands of frequencies of pressure fluctuations with high power spectral density are found in the combustion chamber. The first two bands are found to be axial pressure modes, triggered by coherent flow motions from the burner, such as the flame stabilization location and the precessing vortex core (PVC). The third band is found to be a cross flow directional mode interacting with two of the four combustion chamber walls in the square section of the combustion chamber, triggered from general flow motions. This study shows that LES of real gas turbine components is feasible and that the results give important insight into the flow, flame, and acoustic interactions in a specific combustion system.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Engineering for Gas Turbines and Power
volume
141
issue
7
publisher
American Society of Mechanical Engineers
external identifiers
  • scopus:85061832295
ISSN
0742-4795
DOI
10.1115/1.4042473
language
English
LU publication?
yes
id
a92823b1-8aa8-4e53-9b9f-5eb2346312f8
date added to LUP
2019-03-01 10:23:08
date last changed
2019-03-27 04:39:33
@article{a92823b1-8aa8-4e53-9b9f-5eb2346312f8,
  abstract     = {<p>Large eddy simulations (LES) and experiments (planar laser-induced fluorescence of the hydroxyl radical (OH-PLIF) and pressure transducer) have been carried out on a gas turbine burner fitted to an atmospheric combustion rig. This burner, from the Siemens SGT-800 gas turbine, is a low NOx, partially premixed burner, where preheat air temperature, flame temperature, and pressure drop across the burner are kept similar to engine full load conditions. The large eddy simulations are based on a flamelet-generated manifold (FGM) approach for representing the chemistry and the Smagorinsky model for subgrid turbulence. The experimental data and simulation data are in good agreement, both in terms of time averaged and time-resolved quantities. From the experiments and LES, three bands of frequencies of pressure fluctuations with high power spectral density are found in the combustion chamber. The first two bands are found to be axial pressure modes, triggered by coherent flow motions from the burner, such as the flame stabilization location and the precessing vortex core (PVC). The third band is found to be a cross flow directional mode interacting with two of the four combustion chamber walls in the square section of the combustion chamber, triggered from general flow motions. This study shows that LES of real gas turbine components is feasible and that the results give important insight into the flow, flame, and acoustic interactions in a specific combustion system.</p>},
  articleno    = {071015},
  author       = {Moëll, Daniel and Lantz, Andreas and Bengtson, Karl and Lörstad, Daniel and Lindholm, Annika and Bai, Xue Song},
  issn         = {0742-4795},
  language     = {eng},
  month        = {02},
  number       = {7},
  publisher    = {American Society of Mechanical Engineers},
  series       = {Journal of Engineering for Gas Turbines and Power},
  title        = {Large Eddy Simulation and Experimental Analysis of Combustion Dynamics in a Gas Turbine Burner},
  url          = {http://dx.doi.org/10.1115/1.4042473},
  volume       = {141},
  year         = {2019},
}