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Turbulent Flame Shape Switching at Conditions Relevant for Gas Turbines

Langella, Ivan and Heinze, Johannes and Behrendt, Thomas and Voigt, Lena and Swaminathan, Nedunchezhian and Zedda, Marco (2020) Turbulent Flame Shape Switching at Conditions Relevant for Gas Turbines. Journal of Engineering for Gas Turbines and Power, 142 (1), 011026. American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4044944. ISSN 0742-4795.

Full text not available from this repository.

Official URL: https://doi.org/10.1115/1.4044944

Abstract

A numerical investigation is conducted to shed light on the reasons leading to different flame configurations in gas turbine (GT) combustion chambers of aeronautical interest. Large eddy simulations (LES) with a flamelet-based combustion closure are employed for this purpose to simulate the DLR-AT big optical single sector (BOSS) rig fitted with a Rolls-Royce developmental lean burn injector. The reacting flow field downstream this injector is sensitive to the intricate turbulent-combustion interaction and exhibits two different configurations: (i) a penetrating central jet leading to an M-shape lifted flame; or (ii) a diverging jet leading to a V-shaped flame. The LES results are validated using available BOSS rig measurements, and comparisons show the numerical approach used is consistent and works well. The turbulent-combustion interaction model terms and parameters are then varied systematically to assess the flame behavior. The influences observed are discussed from physical and modeling perspectives to develop physical understanding on the flame behavior in practical combustors for both scientific and design purposes.

Item URL in elib:https://elib.dlr.de/133871/
Document Type:Article
Title:Turbulent Flame Shape Switching at Conditions Relevant for Gas Turbines
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Langella, IvanDepartment of Aeronautical and Automotive Engineering, Loughborough University, UKUNSPECIFIED
Heinze, JohannesJohannes.Heinze (at) dlr.deUNSPECIFIED
Behrendt, ThomasThomas.Behrendt (at) dlr.dehttps://orcid.org/0000-0002-4154-3277
Voigt, Lenalena.voigt (at) dlr.dehttps://orcid.org/0000-0001-9011-2855
Swaminathan, NedunchezhianDepartment of Engineering, University of Cambridge, Cambridge UKUNSPECIFIED
Zedda, MarcoRolls-Royce plc, Derby, UKUNSPECIFIED
Date:January 2020
Journal or Publication Title:Journal of Engineering for Gas Turbines and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:142
DOI :10.1115/1.4044944
Page Range:011026
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0742-4795
Status:Published
Keywords:Flames, Shapes, Turbulence, Flow (Dynamics), Vorticity, Combustion chambers, Ejectors, Combustion
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies (old), L - Virtual Engine and Validation methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Combustor
Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Willert, Dr.phil. Christian
Deposited On:26 Oct 2020 09:56
Last Modified:26 Oct 2020 09:56

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