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Ignition of Hydrogen–Air–Water Vapor Lean Mixtures Behind Shock Waves.

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Title: Ignition of Hydrogen–Air–Water Vapor Lean Mixtures Behind Shock Waves.
Authors: Krivosheyev, P. N.1 (AUTHOR) krivosheyev.pavlik@gmail.com, Kisel, Yu. S.1 (AUTHOR), Skilond', A. V.1 (AUTHOR), Avsyukevich, K. P.1,2 (AUTHOR), Tereza, A. M.3 (AUTHOR), Penyazkov, O. G.1 (AUTHOR)
Source: Journal of Engineering Physics & Thermophysics. Jan2025, Vol. 98 Issue 1, p137-143. 7p.
Subjects: Shock tubes, Shock waves, Chemical kinetics, Water vapor, Surface reactions
Abstract: The ignition of lean mixtures of hydrogen with air and water vapor behind reflected shock waves was studied experimentally in the temperature range 947–1552 K at a pressure of 1 atm. Numerical simulation of the concentration profiles of the electron-excited OH* radical using several widely employed detailed kinetic mechanisms is performed. It is shown that the influence of water on the self-ignition of lean hydrogen–air mixtures at temperatures above 1050 K is insignificant. The discrepancy between the results of calculations and experimental data at temperatures below 1050 K is explained by the presence of small impurities formed in catalytic reactions on the surface. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Engineering Physics & Thermophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 183286184
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Ignition of Hydrogen–Air–Water Vapor Lean Mixtures Behind Shock Waves.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Engineering+Physics+%26+Thermophysics%22">Journal of Engineering Physics & Thermophysics</searchLink>. Jan2025, Vol. 98 Issue 1, p137-143. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Shock+tubes%22">Shock tubes</searchLink><br /><searchLink fieldCode="DE" term="%22Shock+waves%22">Shock waves</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Water+vapor%22">Water vapor</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+reactions%22">Surface reactions</searchLink>
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  Data: The ignition of lean mixtures of hydrogen with air and water vapor behind reflected shock waves was studied experimentally in the temperature range 947–1552 K at a pressure of 1 atm. Numerical simulation of the concentration profiles of the electron-excited OH* radical using several widely employed detailed kinetic mechanisms is performed. It is shown that the influence of water on the self-ignition of lean hydrogen–air mixtures at temperatures above 1050 K is insignificant. The discrepancy between the results of calculations and experimental data at temperatures below 1050 K is explained by the presence of small impurities formed in catalytic reactions on the surface. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Engineering Physics & Thermophysics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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