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Titolo:
The effect of relative hydrogen concentration on catalytic reaction over platinum under low gravity condition
Autore:
Enomoto, H; Kim, HM; Kono, M; Kadota, T;
Indirizzi:
Univ Osaka Prefecture, Dept Mech Engn, Sakai, Osaka 5998531, Japan Univ Osaka Prefecture Sakai Osaka Japan 5998531 kai, Osaka 5998531, Japan INJE Univ, Sch Mech & Automat Engn, Kyongnam 621749, South Korea INJE Univ Kyongnam South Korea 621749 Engn, Kyongnam 621749, South Korea Univ Tokyo, Dept Aeronaut & Astronaut, Bunkyo Ku, Tokyo 113, Japan Univ Tokyo Tokyo Japan 113 naut & Astronaut, Bunkyo Ku, Tokyo 113, Japan
Titolo Testata:
COMBUSTION SCIENCE AND TECHNOLOGY
, volume: 164, anno: 2001,
pagine: 175 - 191
SICI:
0010-2202(2001)164:<175:TEORHC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Keywords:
surface reaction; gaseous fuel; catalyst; parabolic flight; low gravity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Enomoto, H Univ Osaka Prefecture, Dept Mech Engn, 1-1 Gakuen Cho, Sakai, Osaka 5998531, Japan Univ Osaka Prefecture 1-1 Gakuen Cho Sakai Osaka Japan 5998531
Citazione:
H. Enomoto et al., "The effect of relative hydrogen concentration on catalytic reaction over platinum under low gravity condition", COMB SCI T, 164, 2001, pp. 175-191

Abstract

Experiments were performed under low gravity condition in order to investigate the surface reaction model. A spherical platinum of 1.5 mm in diameterwas used, and the surface temperature was measured by thermocouple. The mole fraction of nitrogen of the mixture was 0.91. As the effect of natural convection can be neglected under low gravity condition, the governing equations of mass, energy and species concentrations are formulated in one-dimensional polar coordinates. Axial symmetry, zero azimuthal velocity and no gradient along the axis are assumed. The low gravity condition of the presentexperiment was realized by the parabolic flight. The relative hydrogen concentration of the mixture was varied. If the relative hydrogen concentration is larger than 0.23, the numerical results simulated the experimental results successfully. However, at relative hydrogen concentration less than 0.23, the numerical results did not explain the experimental results well.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 23:46:44