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High-fidelity simulations of the mixing and combustion of a technically premixed hydrogen flame

Mira, Daniel and Both, A. and Lehmkuhl, O. and Gomez, S. and Forck, J. and Tanneberger, Tom and Stathopoulos, Panagiotis and Paschereit, C. (2021) High-fidelity simulations of the mixing and combustion of a technically premixed hydrogen flame. European Combustion Meeting, Online Event.

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Abstract

Numerical simulations are used here to obtain further understanding on the flashback mechanism of a technically premixed hydrogen flame operated in lean conditions. Recent work from the authors (Mira et al., 2020) showed that the hydrogen momentum strongly influences the flame dynamics and plays a fundamental role on the stability limits of the combustor. The axial injection influences the vortex breakdown position and therefore, the propensity of the burner to produce flashback. This work is an extension of our previous work where we include a detailed description of the mixing process and the influence of equivalence ratio fluctuations and heat loss on the flame dynamics.

Item URL in elib:https://elib.dlr.de/147778/
Document Type:Conference or Workshop Item (Speech)
Title:High-fidelity simulations of the mixing and combustion of a technically premixed hydrogen flame
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mira, DanielUNSPECIFIEDUNSPECIFIED
Both, A.UNSPECIFIEDUNSPECIFIED
Lehmkuhl, O.UNSPECIFIEDUNSPECIFIED
Gomez, S.UNSPECIFIEDUNSPECIFIED
Forck, J.UNSPECIFIEDUNSPECIFIED
Tanneberger, TomChair of Fluid Dynamics (Herman-Föettinger-Institut), Technische Universität Berlin, GermanyUNSPECIFIED
Stathopoulos, Panagiotistechnische universität berlin, hermann-föttinger institutUNSPECIFIED
Paschereit, C.Institut für Strömungsmechanik und Technische Akustik, TU BerlinUNSPECIFIED
Date:17 December 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:hydrogen, turbulent flame, large-eddy simulations, flamelets
Event Title:European Combustion Meeting
Event Location:Online Event
Event Type:international Conference
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E VS - Combustion Systems
DLR - Research theme (Project):E - Combustion and Power Plant Systems
Location: Cottbus
Institutes and Institutions:Institute of Low-Carbon Industrial Processes
Deposited By: Stathopoulos, Panagiotis
Deposited On:17 Dec 2021 17:10
Last Modified:17 Dec 2021 17:10

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