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The Augustus Code Package

Michael L. Hall

December 4, 2006

Abstract:

The Augustus Code Package solves the P_1 Equation Set (a superset of the Diffusion Equation Set) on unstructured multi-D meshes.

Augustus is used as a diffusion kernel in the Spartan and Magnum Code Packages.

The new version of Augustus is a part of the CÆSAR Code Package.



Presentations & Articles:

* A Local Support Operator Diffusion Discretization Scheme for Hexahedral Meshes
A presentation by Michael L. Hall, Jim E. Morel and Mikhail J. Shashkov which was given at the JOWOG 42 meeting on October 21st, 1999 at Los Alamos National Laboratory -- is available in HTML, PDF and PostScript formats (LA-UR-99-5834).

* A Local Support-Operators Diffusion Discretization Scheme for Hexahedral Meshes
A presentation by Jim Morel, Michael L. Hall, and Mikhail J. Shashkov which was presented at a CNLS Numerical Analysis Seminar on November 9th, 1999 at Los Alamos National Laboratory -- is available in HTML, PDF and PostScript formats (LA-UR-99-6259).

* A Local Support-Operators Diffusion Discretization Scheme for Hexahedral Meshes
A paper by J. E. Morel, Michael L. Hall, and Mikhail J. Shashkov which has been submitted to the Journal of Computational Physics, Summer 1999 -- is available in HTML, PDF and PostScript formats (LA-UR-99-4358).

* Diffusion Discretization Schemes in Augustus: A New Hexahedral Symmetric Support Operator Method
A presentation by Michael L. Hall and Jim E. Morel which was given three times -- to the ASCI PI meeting on July 14th, 1998 at Los Alamos National Laboratory; at an X-Division Work In Progress talk on July 29th, 1998; and at the Nuclear Explosives Code Development Conference in Las Vegas, NV on October 29th, 1998 -- is available in HTML, PDF and PostScript formats (LA-UR-98-3146).

* A Second-Order Cell-Centered Diffusion Difference Scheme for Unstructured Hexahedral Lagrangian Meshes
A presentation by Michael L. Hall and Jim E. Morel which was given twice -- at the International Congress On Computational And Applied Mathematics in Leuven, Belgium on July 26th, 1996; and at the Nuclear Explosives Code Developers Conference in San Diego, CA on October 24th, 1996 -- is available in PostScript and PDF formats (LA-CP-97-7). It was presented with a video.

* A Second-Order Cell-Centered Diffusion Difference Scheme for Unstructured Hexahedral Lagrangian Meshes
A paper by Michael L. Hall and Jim E. Morel in the Proceedings of the 1996 Nuclear Explosives Code Developers Conference (NECDC), UCRL-MI-124790 is available in HTML, PDF and PostScript formats (LA-CP-97-8).

* Unique Linear Solver Needs of the Los Alamos Radiation Transport Team
A presentation by Michael L. Hall and John M. McGhee which discusses the peripheral issue of linear solvers with respect to two main code packages, DANTE and Augustus/Spartan, is available in PostScript and PDF formats (LA-UR-99-1225). It was presented at the Application Code Developers Meeting of the Accelerated Strategic Computing Initiative in Albuquerque, NM, August 28th, 1996.

* RAYHYD: An ICF Target Simulation Code Written in C++
A paper by Kent G. Budge, James S. Peery, Timothy G. Trucano, Mike K. Wong, Jim E. Morel and Michael L. Hall in the Proceedings of the 1994 Nuclear Explosives Code Developers Conference (NECDC) is available in PDF format.

* Augustus: Unstructured Quadrilateral Mesh Diffusion
A preliminary results presentation by Michael L. Hall and Jim E. Morel that was made very early in the development of Augustus, without much detail, is available in PostScript and PDF. It was presented internally at Sandia National Laboratory on May 6th, 1994.


Telluride Articles:

* The Telluride home page
* Discussion of the Telluride Diffusion Discretization
A presentation by Michael L. Hall that was made to the Telluride Solver Working Group on November 6th, 2002, and then later expanded significantly, is available in PostScript and PDF formats (LA-UR-02-7511).
* A Viewfactor-Based Radiative Heat Transfer Model for Telluride
A LANL technical report by John A. Turner, Michael L. Hall and Austin J. Minnich for the Telluride Team on August 7th, 2002 is available in PDF format (LA-UR-03-8695).
* A Viewfactor-Based Radiative Heat Transfer Model for Telluride
A presentation by John A. Turner, Michael L. Hall and Austin J. Minnich that was made to the Telluride Team on August 8th, 2002 is available in PDF format (LA-UR-03-8704).

Michael L. Hall