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Study of singlet de...
Study of singlet delta oxygen O 2 ( 1 δg) impact on H 2-O 2 mixture ignition in flow reactor : 2D modeling
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Chukalovsky, A. A. (författare)
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Klopovsky, K. S. (författare)
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- Liberman, M. A. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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Mankelevich, Y. A. (författare)
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Popov, N. A. (författare)
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Proshina, O. V. (författare)
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Rakhimova, T. V. (författare)
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(creator_code:org_t)
- Informa UK Limited, 2012
- 2012
- Engelska.
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Ingår i: Combustion Science and Technology. - : Informa UK Limited. - 0010-2202 .- 1563-521X. ; 184:10-11, s. 1768-1786
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Influence of electron excited singlet delta oxygen (SDO) molecules produced in direct current (DC) glow discharged plasma on the induction length decrease in the H2-O2 mixture has been studied via comprehensive two-dimensional (2D) numerical simulations. The sensitivity analysis of the induction length on SDO mole fractions and residual mole fractions of odd oxygen was carried out. The influence of the reaction H 2+O 2( 1g)H+HO2 on the ignition length was found to be negligible due to the presence of residual odd oxygen in the oxidizer flow. Two stages specify the ignition time decrease for the studied conditions: (1) chain initiation in reactions with residual odd oxygen and (2) the following chain-branching enhancement due to reaction H 2+O 2( 1g)O+OH. The last reaction is the key process for studied conditions when the concentration of SDO exceeds 4%. The estimated rate constant of this reaction was found to be about 2.510 13cm 3/s at 780K. The quenching reaction H 2+O 2( 1g)H 2+O 2 does not affect the ignition length.
Nyckelord
- Chemical reactions
- Hydrogen combustion
- Plasma-assisted ignition
- Singlet delta oxygen
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- ref (ämneskategori)
- art (ämneskategori)
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