Vis enkel innførsel

dc.contributor.authorGruber, Andrea
dc.contributor.authorBothien, Mirko R.
dc.contributor.authorCiani, Andrea Camperio
dc.contributor.authorAditya, Konduri
dc.contributor.authorChen, Jacqueline H.
dc.contributor.authorWilliams, Forman Arthur
dc.identifier.citationCombustion and Flame. 2021, 229, .en_US
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. ©2021The Author(s).en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleDirect Numerical Simulation of hydrogen combustion at auto-ignitive conditions: Ignition, stability and turbulent reaction-front velocityen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalCombustion and Flameen_US
dc.relation.projectNotur/NorStore: nn9527ken_US
dc.relation.projectNotur/NorStore: ns9121ken_US
dc.relation.projectNorges forskningsråd: 257579en_US
dc.description.localcodeThis is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US

Tilhørende fil(er)


Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 4.0 Internasjonal