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Determination of a correlation for predicting lean blow off limits of gaseous fueled, premixed turbulent jet flame arrays enclosed in a hexagonal dump combustor

Weis, Christof Günter ORCID iD icon 1; Schwagerus, Alexander 1; Faller, S. 1; Bhagwan, R. 1; Habisreuther, P. ORCID iD icon 2; Zarzalis, N. 1
1 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie (ITC), Karlsruher Institut für Technologie (KIT)


Combustion of natural gas with air in gas turbines is a key technology for efficient provision of electric energy and heat. More stringent regulations regarding the emission of pollutants, such as NOx emissions, are necessitating research on technologies to reduce NOx formation during the combustion process. One technical approach onto the reduction of NOx-formation during combustion is fuel-lean premixed combustion.
Current lean combustion concepts applied in stationary gas turbine combustors rely on flame stabilization through recirculation of hot flue gas using swirling flows. Swirl stabilized flames may be prone to combustion instabilities especially in lean premixed arrangements. Therefore, another approach is followed in the present study. In this concept, a matrix of turbulent lean premixed jet flames in a dump combustor is applied. The matrix burner consists of a nozzle with an array of circular channels in a hexagonal arrangement and a combustion chamber with a hexagonal cross section. In order to develop an appropriate burner design based on this concept, the experimental determination and theoretical evaluation of the lean blow out limit using different nozzles and operating conditions were conducted in this work in order to quantify the influence of different parameters on the flame stability. ... mehr

Postprint §
DOI: 10.5445/IR/1000146404
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Institut für Technische Chemie (ITC)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 17.04.2019
Sprache Englisch
Identifikator KITopen-ID: 1000146404
Erschienen in 9th European Combustion Meeting (ECM), Lissabon, Portugal, 14 - 17 April 2019
Veranstaltung 9th European Combustion Meeting (ECM 2019), Lissabon, Portugal, 14.04.2019 – 17.04.2019
Projektinformation TURBO-REFLEX (EU, H2020, 764545)
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