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Premixed hydrogen-air flames interacting with a hydrogen porous wall

Premixed hydrogen-air flames interacting with a hydrogen porous wall

Category
Journal publication
Abstract
A laminar one-dimensional hydrogen-air flame travelling and quenching towards a chemically inert permeable wall (PW) is studied. Hydrogen flows through the wall into the premixed H2-air. The S3D numerical code with detailed chemistry is used. PW results are compared against results of an impermeable wall (IW), including effects of varying wall mass flux, stoichiometry, inert dilution and unburned-gas and wall temperatures. The maximum reaction heat release rate occurs at the wall in all cases. For rich and stoichiometric mixtures, PW with fuel influx gave a moderate reduction of the quenching (i.e. maximum) wall heat flux compared to IW, whereas for a lean mixture, the increase is considerable. Effects of the fuel influx on the importance of individual elementary reactions and radicals and intermediate species are investigated. The lean PW cases have similarities to much richer IW cases. Both a lower wall temperature and dilution reduce the burned-mixture temperature and, consequently, the wall heat flux.
Client
  • Notur/NorStore / NN9121K
  • Norges forskningsråd / 193816
  • Notur/NorStore / NN9400K
Language
English
Author(s)
  • Salimath Prashant Siddlinggayya
  • Ertesvåg Ivar Ståle
  • Gruber Andrea
Affiliation
  • Norwegian University of Science and Technology
  • SINTEF Energy Research / Termisk energi
Year
2018
Published in
International journal of hydrogen energy
ISSN
0360-3199
Volume
43
Issue
7
Page(s)
3822 - 3836