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Volume 9
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Article

Flame Anchoring of an H2/O2 Non-Premixed Flamewith O2 Transcritical Injection

by
Eugenio Giacomazzi
*,†,‡,
Donato Cecere
‡ and
Nunzio Arcidiacono
Laboratory of Processes & Systems Engineering for Energy Decarbonisation, ENEA, 00123 Rome, Italy
*
Author to whom correspondence should be addressed.
†
Current address: Casaccia Research Center, TERIN-PSU-IPSE, S.P. 081, ENEA, Via Anguillarese 301, S.M. Galeria, 00123 Rome, Italy.
‡
These authors contributed equally to this work.
Aerospace 2022, 9(11), 707; https://doi.org/10.3390/aerospace9110707
Submission received: 10 October 2022 / Revised: 3 November 2022 / Accepted: 7 November 2022 / Published: 11 November 2022
(This article belongs to the Special Issue Large-Eddy Simulation Applications of Combustion Systems)
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Abstract

The article is devoted to the analysis of the flame anchoring mechanism in the test case MASCOTTE C-60 RCM2 on supercritical hydrogen/oxygen combustion at 60 bar, with transcritical (liquid) injection of oxygen. The case is simulated by means of the in-house parallel code HeaRT in the three-dimensional LES framework. The cubic Peng–Robinson equation of state in its improved translated volume formulation is assumed. Diffusive mechanisms and transport properties are accurately modeled. A finite-rate detailed scheme involving the main radicals, already validated for high-pressure H2/O2 combustion, is adopted. The flow is analysed in terms of temperature, hydrogen and oxygen instantaneous spatial distributions, evidencing the effects of the vortex shedding from the edges of the hydrogen injector and of the separation of the oxygen stream in the divergent section of its tapered injector on the flame anchoring and topology. Combustion conditions are characterised by looking at the equivalence ratio and compressibility factor distributions.
Keywords: transcritical flows; high pressure; non-premixed flames; oxy-combustion; hydrogen transcritical flows; high pressure; non-premixed flames; oxy-combustion; hydrogen

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MDPI and ACS Style

Giacomazzi, E.; Cecere, D.; Arcidiacono, N. Flame Anchoring of an H2/O2 Non-Premixed Flamewith O2 Transcritical Injection. Aerospace 2022, 9, 707. https://doi.org/10.3390/aerospace9110707

AMA Style

Giacomazzi E, Cecere D, Arcidiacono N. Flame Anchoring of an H2/O2 Non-Premixed Flamewith O2 Transcritical Injection. Aerospace. 2022; 9(11):707. https://doi.org/10.3390/aerospace9110707

Chicago/Turabian Style

Giacomazzi, Eugenio, Donato Cecere, and Nunzio Arcidiacono. 2022. "Flame Anchoring of an H2/O2 Non-Premixed Flamewith O2 Transcritical Injection" Aerospace 9, no. 11: 707. https://doi.org/10.3390/aerospace9110707

APA Style

Giacomazzi, E., Cecere, D., & Arcidiacono, N. (2022). Flame Anchoring of an H2/O2 Non-Premixed Flamewith O2 Transcritical Injection. Aerospace, 9(11), 707. https://doi.org/10.3390/aerospace9110707

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