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Department of Aerospace Engineering and Engineering Mechanics
University of Texas at Austin
Abstract-
Modeling results of volcanic plumes on Jupiter's moon Io are
presented. Two types of low density axisymmetric sulfur dioxide plume flows are
modeled using the direct simulation Monte Carlo (DSMC) method. Thermal
radiation from all three vibrational bands
and the overall rotational bands of SO2 molecules are
included in the simulations. The radiation features were examined both
by calculating infrared emission spectra along different lines-of-sight
through the plume and with the DSMC
emission images of the whole flow field. A high
resolution plume core flow was obtained by multi-domain sequential
calculation to better study the radiation signature.
The unique gas-dynamic phenomena associated with a hypersonic vertical
jet in a gravitational field are discussed and the relationship
of the gas-dynamics to the surface frost deposition is explored.
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