Non-radial flow near the cometary surface

Details Non-radial flow near the cometary surface Non-radial flow near the cometary surface

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982m%26p....26..345m&link_type=abstract

Moon and the Planets, vol. 26, June 1982, p. 345-351.

Other

6

Comet Nuclei, Gas Flow, Isotherms, Radial Flow, Temperature Distribution, Turbulence

Scientific paper

It is shown that, as a consequence of the non-uniform temperature distribution of the cometary nucleus, large lateral pressure gradients are set up, which in turn drive strong lateral flows. However, at small heliocentric distances the onset of turbulence within a thin boundary layer destroys these steady lateral flows and the eventual outflow of gas from within the outer boundary of this layer is expected to be more or less radial. On the other hand, at large heliocentric distances, turbulence is unlikely to set in, and the lateral flows that are set up, may persist. Consequently, it is expected that the gas flow out of the cometary nucleus at these large distances to be highly non-radial.

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