Applied Mathematics Seminar- A Parallel Computational Model for 3D Thermo-Mechanical Stokes Flow Simulations of Ice Sheets

Speaker: Professor Lili Ju, University of South Carolina
Date and Time: March 10, 4-5pm

Place: Rome 771

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.