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

@inproceedings{Fredrich:2019,
author = {Fredrich, D and Jones, W and Marquis, A},
pages = {1--6},
publisher = {The Combustion Institute},
title = {LES-pdf simulation of combustion dynamics in a partially premixed swirl combustor},
url = {http://hdl.handle.net/10044/1/85236},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - The dynamic behaviour of the partially premixed, swirl-stabilised PRECCINSTA gas turbine model combustor is studied using a fully compressible large eddy simulation solver with a 15-step and 19 species reduced methane mechanism. The solver applies a transported sub-grid probability density function approach solved by the Eulerian stochastic fields method to allow for a burning regime independent description of turbulent flames. A specific operating condition prone to self-excited thermo-acoustic and hydrodynamic instabilities is targeted to evaluate the predictive capabilities of the computational method. Excellent agreement with experimental data is obtained for the predicted thermo-acoustic mode representing a pronounced limit-cycle oscillation at the correct frequency and amplitude. Moreover, the periodic formation and suppression of a precessing vortex core is identified as well as periodic shedding of toroidal vortices at the burner nozzle rim. Both phenomena are shown to be directly coupled to the dominant thermo-acoustic mode and their respective interaction with the flame is investigated in further detail.
AU  - Fredrich,D
AU  - Jones,W
AU  - Marquis,A
EP  - 6
PB  - The Combustion Institute
PY  - 2019///
SP  - 1
TI  - LES-pdf simulation of combustion dynamics in a partially premixed swirl combustor
UR  - http://hdl.handle.net/10044/1/85236
ER  -
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