Statistics – Computation
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....10477t&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #10477
Statistics
Computation
Scientific paper
The study of the cometary coma, or its tenuous atmosphere, is a major space application of rarefied gas dynamics, which requires modeling the gas flow in a wide range of Knudsen number. In the low density regions of the upper atmospheres of the planets and the planetary satellites and the middle to outer coma of comets the intermolecular mean free path becomes longer than the characteristic length of the problem, which makes using of conventional methods of computational gas dynamics problematic and implies the requirement to model the system based on the Boltzmann equation. Results of self-consistent modeling of a dusty coma are presented for the case of comet Borrelly. The dust was modeled on kinetic level, which allows us to simulate the mutual influence of the gas and dust environment without any additional simplifications. Different types of dust size distribution were considered. Sublimation from the surface, collision and fragmentation of the dust particles were taken into account. Influence of dust on the gas environment was studied.
Combi Michael
Tenishev Valeriy
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