NDLI: Chemical and Transport Properties of Carbon–Oxygen–Hydrogen Plasmas in Isochoric Conditions

Content Provider	Springer Nature Link
Author	Pateyron, Bernard Delluc, Guy Fauchais, Pierre
Copyright Year	2005
Abstract	The composition and transport properties of CO$_{2}$, CO, CH$_{4}$, CO + Ar (50 vol%), CO + Fe (50 vol%) have been calculated at constant volume assuming local thermodynamic equilibrium (LTE). Except at low temperature (T < 3000 K), when the formation of condensed species or more complex molecules can occur, pressure increases with temperature at constant volume. For example, for 1 mol of CH$_{4}$ starting at 0.1 MPa and 298 K the pressure can reach 40 MPa at 20,000 K. The consequence is a shift to higher temperatures of dissociation and ionization. The electrical conductivity σ$_{e}$ at constant volume increases drastically relative to that obtained at 0.1 MPa over 15,000 K, in spite of the decrease of the electron density n$_{e}$ This is due to the increase in the neutral species density. n$_{i}$, with a much lower electron-neutral species collision cross section σ$_{ei}$ (σ$_{e}$ is inversely proportional to n$_{i}$,σ$_{ei}$). The viscosity always exhibits a maximum when the ionization degree increases over 1–30%, but this maximum is shifted to higher temperatures and its peak value is higher. The thermal conductivity peaks due to dissociation and ionization are shifted to higher temperatures and their values are reduced compared to those obtained at constant pressure.
Starting Page	485
Ending Page	502
Page Count	18
File Format	PDF
ISSN	02724324
Journal	Plasma Chemistry and Plasma Processing
Volume Number	25
Issue Number	5
e-ISSN	15728986
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermodynamic equilibrium isochoric conditions transport properties gaseous mixture carbon oxygen hydrogen Inorganic Chemistry Mechanics Nuclear Physics, Heavy Ions, Hadrons Mechanical Engineering Characterization and Evaluation Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Condensed Matter Physics Chemical Engineering

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