Thrase

Documentation for Thrase.

About

Thrase is a GPU-enabled, high-order accurate SBP-SAT finite difference code on unstructured meshes for SEAS (Sequences of Earthquakes and Aseismic Slip) problems written entirely in Julia.

Features

• high-order accurate finite difference spatial discretizations featuring provably stability
• direct and matrix-free iterative solvers for static problems via Julia
• non-stiff methods for fully-dynamic (wave propagation) problems involving rate-and-state friction
• high-order accurate, adaptive time-stepping via Julia
• unstructured hexahedral meshes
• non-planar boundaries and interfaces

Dependencies

• Thrase is written entirely in Julia

How to cite

• Erickson, B. A., Kozdon, J. E., and Harvey, T. (2022), A non-stiff summation-by-parts finite difference method for the wave equation in second order form: Characteristic boundary conditions and nonlinear interfaces, Journal of Scientific Computing, doi: 10.1007/s10915-022-01961-1.
• Kozdon, J. E., Erickson, B. A., and Wilcox, L. C. (2020), Hybridized summation-by-parts finite difference methods, Journal of Scientific Computing, doi: 10.1007/s10915-021-01448-5.
• Erickson, B. A. and Dunham, E. M. (2014), An efficient numerical method for earthquake cycles in heterogeneous media: Alternating sub-basin and surface-rupturing events on faults crossing a sedimentary basin, Journal of Geophysical Research, doi:10.1002/2013JB010614.

License

• Distributed under the MIT License. See LICENSE.txt for more information.

Contributing

Thrase is an open-source project and welcomes:

• contributions via forks and pull requests
• questions, feature requests, or bug reports via issues

Contact

• Brittany A. Erickson (bae@uoregon.edu)