A multi-fluid model of an H2O-dominated dusty cometary atmosphere

Details A multi-fluid model of an H2O-dominated dusty cometary atmosphere A multi-fluid model of an H2O-dominated dusty cometary atmosphere

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982m%26p....27..431m&link_type=abstract

Moon and the Planets, vol. 27, Dec. 1982, p. 431-452.

Astronomy and Astrophysics

Astronomy

15

Astronomical Models, Cometary Atmospheres, Interplanetary Dust, Water, Atmospheric Models, Comet Heads, Photochemical Reactions, Radial Distribution, Radiative Transfer, Transonic Flow

Scientific paper

The solution of the simultaneous set of differential equations representing conservation of number density, momentum, and energy, together with solar radiation transfer in streams that are responsible for major photolytic processes and nucleus heating, yields a self-consistent multifluid solution for the thermal and dynamical structure of an H2O-dominated, two-phase dusty gas cometary atmosphere, whose validity is restricted to the collision-dominated region where ions and neutrals are assumed to achieve a common temperature and velocity. The model is transonic, due to the dust in the inner coma, and involves the subsonic expansion of the ions and neutrals from the nucleus until, in the outermost part of the collision-dominated coma, temperatures of 300-400 K are reached due to UV pyrolytic heating.

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