Title: ALE Hydrocodes at the DOE Labs

Speaker: Bill Rider, Sandia National Laboratories

Date/Time: Thursday, November 29, 2007, 4:00 pm - 5:00 pm

Location: CSRI Building, Room 90 (Sandia NM)

Brief Abstract: The development of hydrocodes at the DOE Labs (Los Alamos, Livermore and Sandia) has proceeded for since the Lab's conception during and after WWII. Recently under the DOE ASC program, ALE codes have become the dominant hydrocode methodology at the DOE Labs although their composition is clearly linked with the past.  As such the ALE hydrocodes at the DOE Labs have their idiosyncrasies.  This talk will discuss how the currently used ALE methods came into being and which methodologies have been essential to their present success.  Two of the key methodologies are high-resolution advection methods necessary for a successful remap, and optimal selection of the mesh.  The basic concepts in these methodologies will be introduced and discussed. Finally, improvements in the basic Lagrangian solution methodologies have assisted in producing better hydrocodes. This seminar is part of the Seminar Series of the short course on "Continuum Mechanics on Arbitrary Moving Domains".