Special Session:
Collaborative software system and models

2nd ACES (APEC Cooperation for Earthquake Simulation) Workshop in Japan

Thermal Convection Analysis in a Rotating Shell by a Parallel FEM
Hiroaki Matsui


For investigation of fluid dynamics in the Earth's outer core and mantle, we have been developing thermal-hydraulic subsystem of GeoFEM, which gives a parallel finite element method (FEM) platform. This subsystem is a three dimensional and time-dependent simulation code for an incompressible fluid with the Boussinesq approximation. This subsystem is tested on an analysis of lid-driven convection in a cubic cavity. To investigate focus on the Earth's core dynamics in this study, we carry out a thermal convection analysis in a rotating spherical shell which is modeled on the Earth's outer core. The results of the simulation are compared to a simulation using the spectral method. In both cases, the results of the convection pattern show that three pairs of convection columns are formed and that these columns propagate to westward.

PDF (386KB) |