Heat flux solutions of the 13-moment approximation transport equations in a multispecies gas

Details Heat flux solutions of the 13-moment approximation transport equations in a multispecies gas Heat flux solutions of the 13-moment approximation transport equations in a multispecies gas

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9815613w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A9, p. 15,613-15,619.

Physics

2

Heat Flux, Ionospheric Drift, Temperature Gradients, Thermal Conductivity, Fourier Law, Hydrogen Ions, Maxwell-Boltzmann Density Function

Scientific paper

The present steady-state solution of the 13-moment approximation heat-flux equation takes into account temperature gradient, changes of regimes from subsonic to supersonic conditions, and such effects of drift velocity between species as diffusion-thermal effects. An evaluation is conducted of the validity of Fourier's law, en route to consideration of the character of the high-latitude topside ionosphere's mixture of O(+) and H(+) as well as neutrals. It is found that Fourier's law underestimates heat fluxes for the case of H(+).

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