Title: Verification of the Sceptre Code (UQ/V&V Seminar)

Speaker: Shawn Pautz, Sandia National Laboratories

Date/Time: Tuesday, February 23, 2010, 1:00-2:00 (NM), 12:00-1:00 (CA)        

Location: CSRI Building/Room 90 (Sandia NM), Building 915, Room S145 (Sandia CA)

Brief Abstract: Sceptre is a deterministic radiation transport code within the RAMSES suite of radiation effects codes.  It consists of multiple interchangeable discretizations of both the first- and second-order forms of the linear Boltzmann transport equation.  We have developed several tools to assist in the verification of Sceptre, including mesh generation and refinement codes, solution and error metrics, and manufactured solution test generation.  We have created a suite of verification tests that are exercised on a regular basis.  These tests include "exact" tests, whose solution should be computed within roundoff error regardless of mesh refinement, as well as "inexact" tests, which should exhibit solution convergence as the meshes are refined.  These tests have been helpful in identifying and correcting code errors.  We also present results of order of convergence studies.

CSRI POC: Angel Urbina, 505-844-4988