Large eddy simulation of an oscillating flame using the stochastic fields method
File(s)
Accepted version
Author(s)
Fredrich, Daniel
Jones, WP
Marquis, andrew
Type
Conference Paper
Abstract
Large eddy simulation (LES) of a partially pre-mixed, swirl-stabilised flame is performed using atransported Probability Density Function approachsolved by the stochastic fields method to accountfor turbulence-chemistry interaction on the sub-gridscales. The corresponding sub-grid stresses and scalarfluxes are modelled via a dynamic version of theSmagorinsky model and a gradient diffusion approx-imation, respectively.A 15-step reduced methanemechanism including 19 species is employed for thedescription of all chemical reactions. The test case in-volves a widely studied gas turbine model combustorwith complex geometry and the simulation is carriedout for a specific operating condition involving an os-cillating flame. Overall, results of the velocity, temper-ature and major species mass fractions as well as theinstantaneous thermochemical properties are shown tobe in good agreement with experimental data, demon-strating the capabilities of the applied stochastic fieldsmethod. The inclusion of wall heat transfer in the com-bustion chamber is found to improve temperature pre-dictions, especially in the near-wall regions. In sum-mary, this work showcases the LES method’s accuracyand robustness - none of the default model parametersare adjusted - for an application to complex, partiallypremixed combustion problems
Date Issued
2018-09-26
Date Acceptance
2018-04-23
Citation
Proceedings of ETMM12, 2018, pp.1-6
Start Page
1
End Page
6
Journal / Book Title
Proceedings of ETMM12
Copyright Statement
© 2018 The Author(s).
Sponsor
Siemens Industrial Turbomachinery Ltd
Engineering & Physical Science Research Council (EPSRC)
Grant Number
See further info
EP/K026801/1
Source
12th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
Publication Status
Published
Start Date
2018-09-26
Finish Date
2018-09-28
Coverage Spatial
Montpellier, France