Uses of StGermain

Development of the framework is driven by application projects of a computational nature. Derivative works span finite difference and finite element discretisations of Stokes Flow and Solid Mechanics physics.

Underworld

Underworld 3D basin extension example Underworld is a parallel modelling framework for long-term geophysics research codes, which utilises a Lagrangian particle-in-cell finite element scheme (the prototype of which is the Ellipsis code), and visualised using gLucifer.

Underworld (Monash University) is under development as part of the Australian Computational Earth Systems Simulator (ACcESS) Snark and data- assimilation projects. ACcESS is an Australian government funded Major National Research Facility.

Underworld is the most mature of the StGermain derived framework, CSD's core computational mechanics technology. It forms the basis for the the GALE project, and was the foundation of Xanthus.

gLucifer

gLucifer parallel 3D swarm visualisation gLucifer is a general visualization framework based upon the foundation and domain components of StGermain. It provides both interactive and background (compute time) rendering but concentrates on the latter. This enables the rendering of computationally intense, remotely running applications that are either too large to transmit or too large to render on a local workstation. Instead gLucifer provides the user a 4-D streaming movie.

It is tartgetted for Underworld, but can be used for any grid or particle based computational models that either have the source code available or leverages the StGermain constructs. It provides a toolkit for the development of analysis of model phenomena. To achieve this gLufier incorporates z-buffering composition of parallel rendering, implemented through OpenGL and MPI.

gLucifer (Monash University) is under development as part of the Australian Computational Earth Systems Simulator (ACcESS), an Australian Government National Research Facility.

SPModel

gLucifer parallel 3D swarm visualisation SPMODEL implements a parallel algorithm for deriving a large-scale (continental) landscape evolution governed by several generalized classes of processes, namely: short-range (hill-slope) sediment transport processes, long-range (channel) sediment transport processes, marine sedimentation, flexural response to surface loading-unloading, kinematic imposed surface displacements designed to simulate surface rupturing faulting, generalized tectonic displacements not associated with surface rupturing faults, and sea-level change.

SPModel (University of Melbourne) is under development as part of the Australian Computational Earth Systems Simulator (ACcESS), an Australian Government National Research Facility.

Xanthus

Xanthus was one of Achilles's immortal steeds in Greek mythology Xanthus Xanthus is a research project into the multi-scale simulation of metal forming, which uses the StGermain computational framework. The ultimate aim is to create a framework for developing multi-scale solid-mechancis modelling.

Xanthus is developed for Deakin's Advanced Materials Processing and Performance (AMPP) research team which has an interest in the development of new materials, products and processes through the controlled manipulation of he microstructure of metals at several levels from nano-scale to macro- scale.

GALE

GALE lithospheric deformation example Gale is a parallel, two- or three-dimensional, implicit finite element code focusing on orogenesis, rifting, and subduction with coupling to surface erosion models. Gale uses a hybrid particle-in-cell scheme which combines a deformable mesh of computational points and a dense arrangement of mobile material points. The boundaries of the deformable mesh conform to the boundaries of the material as the simulation progresses, but the interior is constrained to remain as regular as possible. The particles track history-dependent properties such as strain for strain-softening materials. This allows Gale to simulate problems with large deformations and irregular boundaries. It is a concrete application built upon Underworld.

The Computational Infrastructure in Geodynamics (CIG), an initiative of the NSF in the USA, has developed Gale in response to community demand. It leverages on existing work by VPAC and Louis Moresi's group at Monash University.

MADDS

Melt pipes from Richard Katz's work MADDS is a research project to model the dynamics of magma migration using the StGermain computational framework. It aims to accurately simulate the process of mantle deformation, melting and melt transport through a porous media, as observed at tectonic plate boundaries. These processes are to be modeled via a coupling of Stokes flow for the (porous) solid phase and Dracy's law for the fluid. The model is to be implemented incrementally in accordance with a suite of benchmark problems in consultation with the magma dynamics community.

MADDS is being implemented as a collaboration with the Computational Infrastructure in Geodynamics (CIG). It leverages on existing work by VPAC and Louis Moresi's group at Monash University.