ITLApplied  Computational Mathematics Division
ACMD Seminar Series
Attractive Image NIST


XYZ Scientific Applications, Inc.,

Thursday, December 4, 2003 13:30-14:30,
Room 145, NIST North (820)
Thursday, December 4, 2003 11:30-12:30,
Room 5000

Abstract: The first part of this expository talk is an introduction on some of the elementary and advanced techniques of mesh generation for finite element analysis. The second part describes a technique to form nearly orthogonal meshes based on the solution to various systems of elliptic partial differential equations in fluid dynamics, hydrodynamics, heat transfer, solid and structural mechanics in order to minimize lower order error terms. Methods have been developed to solve these equations on surfaces that are not smooth or have discontinuities. Such surfaces are typical of the so-called multiple-surface IGES geometry where only one surface is desired for mesh generation. This requires the use of the projection method so that multiple surfaces can be grouped together as one surface. It is at the edges where the surfaces (almost) meet that the non-smooth or discontinuous features are found.

Speaker Bio: Dr. Rainsberger, B.S. (Mathematics, U. of Illinois-Urbana, 1979) and Ph.D. (Mathematics, U. of California-Berkeley, 1988), is the founding President (1991- present) of XYZ Scientific Applications, Inc., the developer of a finite-element-analysis preprocessor named TrueGrid. Prior to 1991, he worked at Lawrence Livermore National Laboratory and was a consultant to IBM and Control Data in mesh-generation-related code development. He is currently a consultant to NIST Mathematical and Computational Sciences Division on developing finite element analysis codes for applications in the NIST World Trade Center (WTC) investigation project.

Contact: J. T. Fong

Note: Visitors from outside NIST must contact Robin Bickel; (301) 975-3668; at least 24 hours in advance.

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