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Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-22515
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dc.contributor.authorGruber, Andrea-
dc.contributor.authorBothien, Mirko-
dc.contributor.authorCiani, Andrea-
dc.contributor.authorAditya, Konduri-
dc.contributor.authorChen, Jacqueline H.-
dc.contributor.authorWilliams, Forman A.-
dc.date.accessioned2021-05-20T14:04:52Z-
dc.date.available2021-05-20T14:04:52Z-
dc.date.issued2021-
dc.identifier.issn0010-2180de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/22515-
dc.description.abstractDirect Numerical Simulations (DNS) are performed to investigate the process of spontaneous ignition of hydrogen flames at laminar, turbulent, adiabatic and non-adiabatic conditions. Mixtures of hydrogen and vitiated air at temperatures representing gas-turbine reheat combustion are considered. Adiabatic spontaneous ignition processes are investigated first, providing a quantitative characterization of stable and unstable flames. Results indicate that, in hydrogen reheat combustion, compressibility effects play a key role in flame stability and that unstable ignition and combustion are consistently encountered for reactant temperatures close to the mixture’s characteristic crossover temperature. Furthermore, it is also found that the characterization of the adiabatic processes is also valid in the presence of non-adiabaticity due to wall heat-loss. Finally, a quantitative characterization of the instantaneous fuel consumption rate within the reaction front is obtained and of its ability, at auto-ignitive conditions, to advance against the approaching turbulent flow of the reactants, for a range of different turbulence intensities, temperatures and pressure levels.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofCombustion and Flamede_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subjectHydrogende_CH
dc.subjectSpontaneous ignitionde_CH
dc.subjectReheat combustionde_CH
dc.subjectFlame pulsationde_CH
dc.subjectTurbulent flame velocityde_CH
dc.subjectDirect Numerical Simulationde_CH
dc.subject.ddc621.04: Energietechnikde_CH
dc.titleDirect Numerical Simulation of hydrogen combustion at auto-ignitive conditions : ignition, stability and turbulent reaction-front velocityde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitut für Energiesysteme und Fluid-Engineering (IEFE)de_CH
dc.identifier.doi10.1016/j.combustflame.2021.02.031de_CH
dc.identifier.doi10.21256/zhaw-22515-
zhaw.funding.euNode_CH
zhaw.issue111385de_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume229de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedAerodynamicsde_CH
zhaw.webfeedEnergiediskursede_CH
zhaw.webfeedErneuerbare Energiende_CH
zhaw.webfeedRenewable Fuelsde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
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Gruber, A., Bothien, M., Ciani, A., Aditya, K., Chen, J. H., & Williams, F. A. (2021). Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions : ignition, stability and turbulent reaction-front velocity. Combustion and Flame, 229(111385). https://doi.org/10.1016/j.combustflame.2021.02.031
Gruber, A. et al. (2021) ‘Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions : ignition, stability and turbulent reaction-front velocity’, Combustion and Flame, 229(111385). Available at: https://doi.org/10.1016/j.combustflame.2021.02.031.
A. Gruber, M. Bothien, A. Ciani, K. Aditya, J. H. Chen, and F. A. Williams, “Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions : ignition, stability and turbulent reaction-front velocity,” Combustion and Flame, vol. 229, no. 111385, 2021, doi: 10.1016/j.combustflame.2021.02.031.
GRUBER, Andrea, Mirko BOTHIEN, Andrea CIANI, Konduri ADITYA, Jacqueline H. CHEN und Forman A. WILLIAMS, 2021. Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions : ignition, stability and turbulent reaction-front velocity. Combustion and Flame. 2021. Bd. 229, Nr. 111385. DOI 10.1016/j.combustflame.2021.02.031
Gruber, Andrea, Mirko Bothien, Andrea Ciani, Konduri Aditya, Jacqueline H. Chen, and Forman A. Williams. 2021. “Direct Numerical Simulation of Hydrogen Combustion at Auto-Ignitive Conditions : Ignition, Stability and Turbulent Reaction-Front Velocity.” Combustion and Flame 229 (111385). https://doi.org/10.1016/j.combustflame.2021.02.031.
Gruber, Andrea, et al. “Direct Numerical Simulation of Hydrogen Combustion at Auto-Ignitive Conditions : Ignition, Stability and Turbulent Reaction-Front Velocity.” Combustion and Flame, vol. 229, no. 111385, 2021, https://doi.org/10.1016/j.combustflame.2021.02.031.


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