Computer Science – Sound
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.2445s&link_type=abstract
Journal of Geophysical Research, vol. 88, Mar. 10, 1983, p. 2445-2455.
Computer Science
Sound
25
Binary Systems (Materials), Planetary Structure, Pressure Effects, Viscosity, Entropy, Helium, Jupiter (Planet), Mathematical Models, Phase Transformations, Saturn (Planet), Sound Waves, Tidal Waves
Scientific paper
The irreversible entropy production is calculated for the imposition of a pressure perturbation on a two-phase medium composed of a dilute suspension of droplets (or snowflakes) and a liquid phase of other materials. An absence of metastability is assumed, allowing the relaxation to be dominated by the solute finite diffusivity. The fluid medium was found to display a behavior suggestive of a bulk viscosity near 10 trillion P, a finding that is significant for studies of dissipation in planetary cores for tidal or seismic disturbances. A minimum quality factor for acoustic or tidal pressure oscillations and the accompanying frequency are calculated. An example is provided in terms of helium rain clouds in the deep interiors of giant planets. Additionally, a tidal quality factor of 10 to the 15th is found necessary to account for Io volcanism and resurfacing on Enceladus.
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