Abstract
view Abstract Citations (5) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Vortex Rings and the Solar Granulation Arendt, Steve Abstract Observations indicate that solar granules have the flow topology of updraft vortex loops. We interpret granule behavior in terms of the mutual and self-interactions of such loops. In particular, the expansion phase that granules commonly undergo is explained by the self-expansion of a vortex ring in a stratified fluid. For a range of granular parameters, we find that the expansion velocity of a vortex ring varies from 0.7 to 1.5 times the maximum surface flow velocity, in agreement with granule observations. We also present speculation on the nature of granule fragmentation. Publication: The Astrophysical Journal Pub Date: February 1994 DOI: 10.1086/173778 Bibcode: 1994ApJ...422..862A Keywords: Astronomical Models; Hydrodynamics; Mathematical Models; Solar Granulation; Vortex Rings; Vorticity; Expansion; Gravitational Fields; Solar Convection (Astronomy); Stratification; Solar Physics; HYDRODYNAMICS; SUN: GRANULATION full text sources ADS |
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