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Compressible Large Eddy Simulation of Thermoacoustic Instabilities in the PRECCINSTA Combustor using Flamelet Generated Manifolds with Dynamic Thickened Flame Model

Gövert, Simon and Lipkowicz, Jonathan Timo and Janus, Bertram (2023) Compressible Large Eddy Simulation of Thermoacoustic Instabilities in the PRECCINSTA Combustor using Flamelet Generated Manifolds with Dynamic Thickened Flame Model. In: ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023. ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition, 2023-06-26 - 2023-06-30, Boston, MA, USA. doi: 10.1115/GT2023-103438. ISBN 978-0-7918-8696-0.

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Abstract

The fully compressible, density-based CFD-solver TRACE has been extended for simulations of turbulent reacting flows in aero engine gas turbine combustors. The flamelet generated manifolds combustion model is utilized to account for detailed chemical kinetics and combined with the dynamically thickened flame model to resolve the flame front on the large eddy simulation (LES) mesh. The chemistry tabulation is coupled with the LES solver by inversion of the transported energy equation using tabulated mixture averaged NASA polynomial coefficients. LES of the PRECCINSTA test case, a lean, partially-premixed swirl combustor are performed and the two distinctive regimes are correctly predicted: a stable regime with a 'quite' stable flame and an unstable regime with an oscillating flame driven by self-excited thermoacoustic instabilities. Statistics collected from the simulations, mean and root-mean-square values, are in good agreement with the experimental reference data for both operating conditions. The dominant frequency of the unstable flame deviates from the measurement by about 100 Hz and requires further investigation. The results demonstrate the general suitability of the simulation framework for reacting flow simulations in gas turbine combustion systems and the prediction of self-excited thermoacoustic oscillations.

Item URL in elib:https://elib.dlr.de/196655/
Document Type:Conference or Workshop Item (Speech)
Title:Compressible Large Eddy Simulation of Thermoacoustic Instabilities in the PRECCINSTA Combustor using Flamelet Generated Manifolds with Dynamic Thickened Flame Model
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Gövert, SimonUNSPECIFIEDhttps://orcid.org/0000-0003-4593-1776UNSPECIFIED
Lipkowicz, Jonathan TimoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Janus, BertramUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:2023
Journal or Publication Title:ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.1115/GT2023-103438
ISBN:978-0-7918-8696-0
Status:Published
Keywords:compressible LES, FGM, PRECCINSTA, thermoacoustic instabilities
Event Title:ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition
Event Location:Boston, MA, USA
Event Type:international Conference
Event Start Date:26 June 2023
Event End Date:30 June 2023
Organizer:American Society of Mechanical Engineers (ASME)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Components and Emissions
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Deposited By: Gövert, Simon
Deposited On:23 Oct 2023 09:50
Last Modified:24 Apr 2024 20:56

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