Statistics – Computation
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p21a1591b&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P21A-1591
Statistics
Computation
[0545] Computational Geophysics / Modeling, [5430] Planetary Sciences: Solid Surface Planets / Interiors, [5455] Planetary Sciences: Solid Surface Planets / Origin And Evolution
Scientific paper
Tidal dissipation associated with the gravitational torque interactions between a satellite and its planet can dramatically affect not only their orbital and respective spin dynamics, but also their internal heat budgets. A complete description of the thermal evolution of planets and moons interiors thus requires to consistently include tidal dissipation in the computation of their internal dynamics. We have developed a new tool, CHEOPS-2D (Coupling Heat transfer and Evolution of the Orbit of Planets and of their Satellites in 2-Dimensional geometry). The conservation equations for the mantle are considered under the anelastic approximation in 2D-Cartesian, cylindrical and spherical annulus (Hernlund and Tackley, PEPI, 2008) geometry. They are discretized using finite-volumes on a staggered mesh. The momentum equation is treated by a multigrid solver (SIMPLER smoother). An explicit scheme is used for the energy balance, with a centered, second-order discretization for diffusion and a high-resolution method (Superbee slope limiter) for advection. The code enables to handle large viscosity gradients. The tidal dissipation contribution is included using the radial functions approach for a viscoelastic body. It corresponds to a heterogeneous internal heating term (but of external origin) in the energy equation. We will first compare our results in 2D-spherical annulus geometry for Earth-like planets with those of Běhounková et al. (JGR-Planets, in press), who used a fully 3D-spherical method under the Boussinesq approximation for the internal dynamics, and an incompressible Maxwell rheology for the tidal dissipation. We will then present the influence of the anelastic approximation and compressible viscoelastic rheology on tidal heating patterns.
Behounkova Marie
Besserer J.
Cadek Ondřej
Choblet Gaël
Mocquet Antoine
No associations
LandOfFree
Tidally heated compressible mantle convection in planets and moons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Tidally heated compressible mantle convection in planets and moons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tidally heated compressible mantle convection in planets and moons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1495409