Applied Mathematics Seminar
Thu, 10 March, 2016
9:00pm
Speaker: Professor Lili Ju, University of South Carolina
Title: A Parallel Computational Model for 3D Thermo-Mechanical Stokes Flow Simulations of Ice Sheets
Abstract:
In this talk we present our work on the development of a parallel three-dimensional, thermo-mechanically coupled, nonlinear Stokes flow computational model for ice sheet simulations. Our model features stable and high-order accurate discretizations on variable resolution grids and efficient parallel solution techniques. In particular, we employ a stable and locally mass-conserved finite element approximation for the Stokes problem, an efficient iterative solution method for treating nonlinearity of the viscosity, an accurate finite element solver for the temperature equation, and a conservative finite volume solver for handling change of ice thickness. We also demonstrate efficiency and physical reliability of the Stokes ice flow model using various numerical tests including manufactured solutions, benchmark experiments and the realistic Greenland ice sheet.