Cherri Porter
Conference Coordinator
cporter@sandia.gov
(505) 844-2788
Please join the IMR Social Group on LinkedIn to get the latest updates from the committee and to network with the International Meshing Community
- Invited Speaker: Dr. Tom Sederberg, Brigham Young University
- Invited Speaker: Dr. Mark Meyer, Pixar
- Invited Speaker: Dr. Phil Sewell, Nottingham University (UK)
- Invited Speaker: Dr. Ted Blacker, Sandia National Laboratories
Title: The Story of T-Splines
Biography: Thomas W. Sederberg is a professor of computer science at Brigham Young University, and associate dean of the BYU College of Physical and Mathematical Sciences. He invented T-splines in 2003 and co-founded T-Splines, Inc. with his son and some former students.
Abstract: T-Splines is a CAD surface geometry representation that was created to address problems inherent in NURBS surfaces. For Example, T-Splines surfaces are watertight and are locally refineable,while NURBS-based models are not. These attributes make T-Splines attractive for use in isogeometric analysis.
This talk will discuss developments in the field of computer aided geometric design that led to the invention of T-Splines. It will overview the mathematics of both NURBS and T-Splines and explain how they can be used in isogeometric analysis.
The use of T-Splines from the vantage point of professional designers will be discussed, as well as the commercializaion of T-splines.
http://graphics.pixar.com/people/mmeyer/index.html
Title: Meshing for Unstructured Transmission Line Model, UTLM, Electromagnetic Simulations
Biography: Professor Phillip Sewell received the B.Sc. degree in Electrical and Electronic Engineering (first-class honors) and Ph.D. degree from the University of Bath in 1988 and 1991, respectively. From 1991 to 1993, he was a Post-Doctoral Fellow with the University of Ancona, Ancona, Italy. In 1993, he became a Lecturer with the School of Electrical and Electronic Engineering, University of Nottingham, Nottingham, U.K. In 2001 and 2005, he became a Reader and Professor of Electromagnetics at the University of Nottingham and is a member of the George Green Institute for Electromagnetics Research.
Professor Sewell's research encompasses a broad range of activities centred upon electromagnetic simulations. Theoretical development of algorithms, both analytic and numerical, is pursued in conjunction with investigations into the practical issues involved when these are applied to large-scale industrial problems, for example mesh generation and CAD repair, as well as efficient large-scale computer implementations on parallel platforms. Application of the techniques developed is primarily made in the fields of Electromagnetic Compatibility, EMC, with particular emphasis upon aerospace environments, and integrated photonics.
Abstract: This presentation will give an overview of the development of a Transmission Line Modelling method suitable for use with unstructured meshes, UTLM. The TLM approach decomposes a problem space into discrete cells and solutions evolve in the time domain by alternating cell-scatter and inter-cell connection operations. As a time domain algorithm the attractions of TLM are that it is an explicit time stepping algorithm and maybe most importantly, is provable stable before simulations are launched. The requirement of UTLM is that the unstructured mesh is Delaunay, although in practice, the key enabling feature of the approach for large-scale aerospace simulations is the embedding of fine features such as thin panels and wiring which cannot be meshed directly. In particular, the talk will discuss the close-interaction between the mesh characteristics, both in general and in the proximity of fine features, and the performance of the simulation algorithm.
Title:
Biography: Dr. Ted Blacker, the founder of the International Meshing Roundtable, has been active in the meshing and pre-processing arena for most of his career. He joined Sandia National Labs in 1983 with an MS degree from Brigham Young University. After initial successes in automating existing 2D meshing algorithms, he proceeded to explore automated decompositions and conjoint meshing primitives. This led to the break-through paving technology for all-quad meshing of arbitrary surfaces, winning an R&D 100 award in 1992. Dr. Blacker established the CUBIT project at Sandia, a successful and vibrant pre-processing research and development effort now in its 21st year. This also led to the establishment of the International Meshing Roundtable, a conference focused on meshing and related geometry issues. He also formed a consortium of companies interested in the technology being developed at Sandia. In 1993, Ted completed his PhD at Northwestern University under Dr. Ted Belytschko, and returned to Sandia where he initiated and then directed the whisker weaving technology development for all hex meshes. Ted then took advantage of his industry consortium connections to work in private industry for Fluent, Inc., for 7 years (1995-2002) leading the GAMBIT development team, and personally developing the Cooper Tool for general n-to-m hex mesh sweeping. In 2002 he returned to SNL to manage CUBIT and related programs aimed at improving analysis modeling throughput. He has published extensively. He recently served on a temporary assignment to the DoD CREATE program in Washington DC, providing needed meshing and geometry program development. He is currently back at Sandia National Laboratories, where he now manages a department dedicated to meshing, geometry, and massively parallel infrastructure for the SIERRA computational mechanics codes. His current Sandia responsibilities include guidance of the development of a CAE software tool integrating geometry and mesh modeling, model preparation, and job submission with a single GUI interface for use in massively parallel simulations. This tool targets computational simulation ranging from desktop to exascale environments.
Abstract:
©1997-2012 Sandia Corporation | Questions and Comments | Privacy and Security | 
News release RSS feed