TY  - GEN
A1  - Seiß, Martin
A1  - Spahn, Frank
T1  - Hydrodynamics of Saturn’s dense rings
T2  - Postprints der Universität Potsdam : Postprint Mathematisch Naturwissenschaftliche Reihe
N2  - The space missions Voyager and Cassini together with earthbound observations re-vealed a wealth of structures in Saturn’s rings. There are, for example, waves being excited at ring positions which are in orbital resonance with Saturn’s moons. Other structures can be assigned to embedded moons like empty gaps, moon induced wakes or S-shaped propeller features. Further-more, irregular radial structures are observed in the range from 10 meters until kilometers. Here some of these structures will be discussed in the frame of hydrodynamical modeling of Saturn’s dense rings. For this purpose we will characterize the physical properties of the ring particle ensemble by mean field quantities and point to the special behavior of the transport coefficients. We show that unperturbed rings can become unstable and how diffusion acts in the rings. Additionally, the alternative streamline formalism is introduced to describe perturbed regions of dense rings with applications to the wake damping and the dispersion relation of the density waves.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 574 
KW  - granular gas
KW  - instabilities
KW  - hydrodynamics
KW  - planetary rings
Y1  - 2019
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/41313
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-413139
SP  - 191
EP  - 218
ER  -