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Lean-Blow-Out Simulation of Natural Gas Fueled, Premixed Turbulent Jet Flame Arrays With LES and FGM-Modeling

Schwagerus, Alexander; Habisreuther, Peter ORCID iD icon; Zarzalis, Nikolaos


To ensure compliance with stricter regulations on exhaust gas emissions, new industrial burner concepts are being investigated. One of these concepts is the matrix burner, consisting of an array of premixed, non-swirling jet flames. For the design of such burners, the prediction of fundamental burner properties is mandatory. One of these essential quantities is the lean blowout limit (LBO), which has already been investigated experimentally. This study investigates the possibility of numerical LBO prediction using a tabulated chemistry approach in combination with Large-Eddy-Simulation turbulence modeling. In contrast to conventional swirl burners, the numerical description of blowout events of multi jet flames has not yet been studied in detail. Lean blowout simulations have therefore been conducted for multiple nozzle variants, varying in their diameter and global dump ratio for a variety of operating conditions, showing their general applicability. A procedure to induce LBO is introduced where a stepwise increase in total mass flow is applied. LBO is determined based on the temporal progress of the mean reaction rate. A comparison with measurements shows good agreement and demonstrates that the procedure developed here is an efficient way to predict LBO values. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138013
Veröffentlicht am 28.09.2021
DOI: 10.1115/GT2021-58938
Zitationen: 1
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Publikationstyp Proceedingsbeitrag
Publikationsmonat/-jahr 06.2021
Sprache Englisch
Identifikator ISBN: 978-0-7918-8494-2
KITopen-ID: 1000138013
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Weitere HGF-Programme 34.14.02 (POF III, LK 01) Vergasung
Erschienen in Proceedings of ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition Volume 3A : ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online
Veranstaltung ASME Turbo Expo: Turbomachinery Technical Conference and Exposition (GT 2021), Online, 07.06.2021 – 11.06.2021
Verlag The American Society of Mechanical Engineers (ASME)
Seiten Art.-Nr: V03AT04A026
Serie Turbo Expo: Power for Land, Sea and Air
Nachgewiesen in Dimensions
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
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