Skip to main content
Erschienen in: Flow, Turbulence and Combustion 4/2024

27.02.2024 | Research

Effects of Intrinsic Instabilities on the Response of Premixed Hydrogen/Air Conical Flames to Inlet Flow Perturbations

verfasst von: Linlin Yang, Yiqing Wang, Thorsten Zirwes, Feichi Zhang, Henning Bockhorn, Zheng Chen

Erschienen in: Flow, Turbulence and Combustion | Ausgabe 4/2024

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

As a zero-carbon fuel, hydrogen is considered a promising alternative fuel. Hydrogen flames can be greatly affected by intrinsic instabilities including the diffusional-thermal instability (DTI) and Darrieus-Landau instability (DLI). Therefore, it is important to understand their properties, especially for cryogenic flames that are related to the safe utilization of liquid hydrogen. In this work, we conduct two-dimensional simulations of unsteady hydrogen/air conical flames to assess the effects of intrinsic instabilities, DTI and DLI, on the response of premixed hydrogen/air conical flames to inlet flow perturbations. The equivalence ratio and initial temperature are changed to respectively achieve different Lewis numbers (related to DTI) and expansion ratios (related to DLI). It is found that under certain conditions flame pinch-off occurs, during which a separated flame pocket is formed by the strong amplification of flame wrinkles generated by the inlet flow perturbations. The underlying mechanism of flame pinch-off enhancement due to DTI and DLI is different. For fuel-lean hydrogen/air at normal temperature, the flame front wrinkling is enhanced by strong DTI and it is the stretch-chemistry interaction that leads to flame pinch-off. However, for stoichiometric hydrogen/air at cryogenic temperature, there is a strong effect of DLI and flame pinch-off is mainly induced by flame-flow interaction. Moreover, downstream flow and flame speed near the separated flame pocket for flames exhibiting strong DTI and DLI are compared and the difference is analyzed. The findings indicate that intrinsic flame instability can amplify flame wrinkling and fluctuations in heat release rate, thereby contributing to flame pinch-off.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literatur
Zurück zum Zitat Landau, L.: On the theory of slow combustion. In: Dynamics of Curved Fronts, pp. 403–411. Elsevier (1988)CrossRef Landau, L.: On the theory of slow combustion. In: Dynamics of Curved Fronts, pp. 403–411. Elsevier (1988)CrossRef
Zurück zum Zitat Law, C.K.: Combustion Physics. Cambridge University Press, Cambridge (2006)CrossRef Law, C.K.: Combustion Physics. Cambridge University Press, Cambridge (2006)CrossRef
Zurück zum Zitat Liberman, M.A.: Combustion Physics: Flames, Detonations, Explosions, Astrophysical Combustion and Inertial Confinement Fusion. Springer International Publishing, Cham (2021)CrossRef Liberman, M.A.: Combustion Physics: Flames, Detonations, Explosions, Astrophysical Combustion and Inertial Confinement Fusion. Springer International Publishing, Cham (2021)CrossRef
Zurück zum Zitat Nagel, W.E., Kröner, D.H., Resch, M.M. (eds): High Performance Computing in Science and Engineering ’14. Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2014. Springer International Publishing, Cham (2015) Nagel, W.E., Kröner, D.H., Resch, M.M. (eds): High Performance Computing in Science and Engineering ’14. Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2014. Springer International Publishing, Cham (2015)
Zurück zum Zitat Peters, N.: Turbulent Combustion. Cambridge University Press, Cambridge (2000)CrossRef Peters, N.: Turbulent Combustion. Cambridge University Press, Cambridge (2000)CrossRef
Zurück zum Zitat Poinsot, T., Veynante, D.: Theoretical and Numerical Combustion. Rtedwards Inc. (2005) Poinsot, T., Veynante, D.: Theoretical and Numerical Combustion. Rtedwards Inc. (2005)
Zurück zum Zitat Verfondern, K., Cirrone, D., Molkov, V., Makarov, D., Coldrick, S., Ren, Z., Wen, J., Proust, C., Friedrich, A., Jordan, T., Kuznetsov, M.: Handbook of Hydrogen Safety: Chapter on LH2 Safety. Pre-normative Research for Safe use of Liquid Hydrogen (PRESLHY) (2021) Verfondern, K., Cirrone, D., Molkov, V., Makarov, D., Coldrick, S., Ren, Z., Wen, J., Proust, C., Friedrich, A., Jordan, T., Kuznetsov, M.: Handbook of Hydrogen Safety: Chapter on LH2 Safety. Pre-normative Research for Safe use of Liquid Hydrogen (PRESLHY) (2021)
Zurück zum Zitat Zirwes, T., Sontheimer, M., Zhang, F., Abdelsamie, A., Pérez, F.E.H., Stein, O.T., Im, H.G., Kronenburg, A., Bockhorn, H.: Assessment of numerical accuracy and parallel performance of OpenFOAM and its reacting flow extension EBIdnsFoam. Flow Turbul. Combust. 111, 567–602 (2023a). https://doi.org/10.1007/s10494-023-00449-8CrossRef Zirwes, T., Sontheimer, M., Zhang, F., Abdelsamie, A., Pérez, F.E.H., Stein, O.T., Im, H.G., Kronenburg, A., Bockhorn, H.: Assessment of numerical accuracy and parallel performance of OpenFOAM and its reacting flow extension EBIdnsFoam. Flow Turbul. Combust. 111, 567–602 (2023a). https://​doi.​org/​10.​1007/​s10494-023-00449-8CrossRef
Metadaten
Titel
Effects of Intrinsic Instabilities on the Response of Premixed Hydrogen/Air Conical Flames to Inlet Flow Perturbations
verfasst von
Linlin Yang
Yiqing Wang
Thorsten Zirwes
Feichi Zhang
Henning Bockhorn
Zheng Chen
Publikationsdatum
27.02.2024
Verlag
Springer Netherlands
Erschienen in
Flow, Turbulence and Combustion / Ausgabe 4/2024
Print ISSN: 1386-6184
Elektronische ISSN: 1573-1987
DOI
https://doi.org/10.1007/s10494-024-00535-5

Weitere Artikel der Ausgabe 4/2024

Flow, Turbulence and Combustion 4/2024 Zur Ausgabe

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.