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Numerical Investigation of the Low-Swirl Flow in an Aeronautical Combustor With Angular Air Supply

Hoffmann, Sven ORCID iD icon; Koch, Rainer; Bauer, Hans-Jörg


Civil air traffic is predicted to further grow in the near future. Hence, the development of aeronautical combustors will face major challenges to meet future stringent environmental regulations. In the present study, an innovative gas turbine combustor with angular air supply called Short Helical Combustor (SHC) is investigated. The main feature of this concept is the helical arrangement of the fuel injectors around the turbine shaft. Aiming at the implementation of a lean-burn concept, a low-swirl lifted flame is adopted. This flame is lifted off and not anchored to the injector which opens the potential of low NOx emissions due to a high degree of premixing within the combustor.

In this work, isothermal flow characteristics of such a generic SHC combustor are studied by use of RANS predictions with special emphasis on the interaction of adjacent low-swirl flows. For evaluating the influence of injector parameters on the flow field, a parametric study based on single sector simulations is performed. It is shown that the asymmetrically confined swirling jet flow is strongly deflected towards the sidewall of the staggered SHC dome. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138302
Veröffentlicht am 30.09.2021
DOI: 10.1115/GT2021-59286
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 16.09.2021
Sprache Englisch
Identifikator ISBN: 978-0-7918-8492-8
KITopen-ID: 1000138302
Erschienen in Proceedings of ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, June 7–11, 2021, Virtual, Online. Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions
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 Nr. GT2021-59286
Serie Turbo Expo: Power for Land, Sea and Air
Bemerkung zur Veröffentlichung Art.-Nr. V02CT34A019
Schlagwörter Aircraft jet engine, Lean-burn combustor, Short Helical Combustor, Low-swirl flow
Nachgewiesen in Dimensions
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