Imperial College London
Alternate

ProfessorWilliamJones

Faculty of Engineering, Department of Mechanical Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 7037w.jones

 
 
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Assistant

 

Ms Fabienne Laperche +44 (0)20 7594 7033

 
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Location

 

607City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Xia:2019:10.1080/00102202.2019.1583221,
author = {Xia, Y and Laera, D and Jones, WP and Morgans, AS},
doi = {10.1080/00102202.2019.1583221},
journal = {Combustion Science and Technology},
pages = {979--1002},
title = {Numerical prediction of the Flame Describing Function and thermoacoustic limit cycle for a pressurised gas turbine combustor},
url = {http://dx.doi.org/10.1080/00102202.2019.1583221},
volume = {191},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The forced flame responses in a pressurized gas turbine combustor are predicted using numerical reacting flow simulations. Two incompressible1 large eddy simulation solvers are used, applying two combustion models and two reaction schemes (4-step and 15-step) at two operating pressures (3 and 6 bar). Although the combustor flow field is little affected by these factors, the flame length and heat release rate are found to depend on combustion model, reaction scheme, and combustor pressure. The flame responses to an upstream velocity perturbation are used to construct the flame describing functions (FDFs). The FDFs exhibit smaller dependence on the combustion model and reaction chemistry than the flame shape and mean heat release rate. The FDFs are validated by predicting combustor thermoacoustic stability at 3 and 6 bar and, for the unstable 6 bar case, also by predicting the frequency and oscillation amplitude of the resulting limit cycle oscillation. All of these numerical predictions are in very good agreement with experimental measurements.
AU  - Xia,Y
AU  - Laera,D
AU  - Jones,WP
AU  - Morgans,AS
DO  - 10.1080/00102202.2019.1583221
EP  - 1002
PY  - 2019///
SN  - 0010-2202
SP  - 979
TI  - Numerical prediction of the Flame Describing Function and thermoacoustic limit cycle for a pressurised gas turbine combustor
T2  - Combustion Science and Technology
UR  - http://dx.doi.org/10.1080/00102202.2019.1583221
UR  - http://hdl.handle.net/10044/1/67144
VL  - 191
ER  -
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