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AHPCRC Bulletin: Winter/Spring 1996 - Volume 6 Number 1-2

The Third US-Japan Symposium on Finite Element Simulation of Flow Problems Held at AHPCRC

Anita Anderson (AHPCRC-UM)

Panel members: Robert Whalin (CEWES), William Mermagen (ARL), H. Ted Davis (AHPCRC)
The Third US-Japan Symposium on Finite Element Methods in Large-Scale Computational Fluid Dynamics was held at the AHPCRC Headquarters on March 31-April 3, 1996. The Symposium was sponsored by the Department of Aerospace Engineering and Mechanics (AEM), AHPCRC and the Supercomputer Institute (MSI) at the University of Minnesota (UM). The organizing team consisted of Tayfun Tezduyar (AHPCRC-UM), Mutsuto Kawahara (Chuo University), and Thomas Hughes (Stanford University). The same team also organized the two earlier symposia in this series, which were held in October 1992 at the UM and in March 1994 at Chuo University in Tokyo.

The Symposium commenced on Sunday evening with registration and a welcoming reception held at the Marquette Hotel in downtown Minneapolis. Approximately ninety researchers from the US and Japan attended the Symposium.

The following morning, welcoming and introductory remarks were given by Ettore Infante, UM Senior Vice President for Academic Affairs, Tezduyar, and Don Truhlar, Director of the MSI. The first session was chaired by Hughes, and presenters included Kawahara, Akira Maruoka of Chuo University, and Philip Gresho of Lawrence Livermore National Laboratory.

The presentations were on the following subjects: "Future Trends in Finite Element Analysis" (Kawahara); "An Optimal Control Problem in the Navier Stokes Equation" (Kawahara and Maruoka); and "Projection 2 Goes Turbulent-and Fully Implicit" (Gresho).

Mutsuto Kawahara (Chuo University)
Gresho was chairperson of the second morning session. The first talk was given by Tezduyar and Vinay Kalro, on "3D Flow Simulations on Parallel Platforms," followed by a talk given by Kazuo Kashiyama (Chuo University) on "Massively Parallel Finite Element Method for Storm Surge." The last presentation of the morning was on "Parallel Overlapping Scheme for Viscous Incompressible Flows," given by Masayuki Kaiho of Hitachi.

Vinay Kalro (AHPCRC)
The first afternoon session was chaired by Kashiyama and began with a talk given by Andrew Johnson of the AHPCRC-UM on "Parallel Computation of Incompressible Flows with Complex Geometries." Following Johnson was John Shadid of Sandia National Laboratories. Shadid presented his work on "Fully-Coupled Iterative Solution of Chemically Reacting Flows on Massively Parallel Supercomputers."

The fourth and final session of the day was a panel discussion on the "Role of Flow Simulation," chaired by Robert Whalin of the Corps of Engineers, Waterways Experiment Station (CEWES). The other panelists were H. Ted Davis, Dean of the Institute of Technology at the UM, Kawahara, and William Mermagen of the Army Research Laboratory (ARL).

The day's activities were concluded with a reception and banquet held on the 50th floor of the IDS Center in downtown Minneapolis. Phillips Shively, Provost for Arts, Sciences, and Engineering at the UM, provided opening remarks following the meal. He also introduced the banquet speaker, Richard Chait, Director of Army Research and Laboratory Management, who described some of the current and future trends in research.

The second day consisted of Sessions 5 through 8, chaired by Kawahara, Takashi Nomura of Nihon University, Gloria Wren of ARL, and Jeffrey Derby of the AHPCRC-UM, respectively.

Gloria Wren (ARL)
The two morning sessions started with talks on "Subgrid Scale Models Derived from Variational Multiscale Procedures," by Hughes, "Consistent Finite Element Calculation of Boundary and Interior Flux," by Marie Oshima of the University of Tokyo, and "Finite Element Prediction of Wind Field Over Complex Terrain," by Nomura. Session 6 began with a talk given by Wren on "Finite Element Computation of Interaction Between Diverse Media," followed by Masahisa Tabata's (Hiroshima University) description of "Precise Computation of Drag Coefficients of the Sphere," and then "Numerical Fluid Flow Analysis for Aerodynamic Response Characteristic of Tandem Circular Cylinders," by Hirokazu Hirano of Chuo University. Session 7 began in the afternoon with a talk by Derby on "Finite Element Analysis of Flows During Crystal Growth Processes," a discussion by Joao Dias of Centric Engineering Systems on "Application of Computational Fluid Dynamics to High Speed Trains," and Bayard Holmes' (also of Centric Engineering Systems) presentation of the "Calculation of the Windnoise from the Pantograph Cover of a High Speed Train." The final session of the day included a joint presentation by Jeffrey Holland and Charles Berger, both of CEWES, on "Finite Element Analyses in Surface Water and Groundwater: an Overview of Investigations at the Waterways Experiment Station," followed by Katsumori Hatanaka of Nihon University on "Finite Element Analysis of Air Flow Around Permeable Sand Fences," and finally, "Moving Boundary Simulation of Shallow Water Flow by Finite Element Method," presented by Tsuyoshi Umetsu of Maebashi City College of Technology.

Thomas Hughes (Stanford University)

Jeffrey Holland (CEWES)
A dinner honoring speakers and panel members was held the night of Tuesday, April 2, at the Marquette Hotel. Davis, the host for the event, along with Hughes, thanked those who organized and participated in the symposium for their help in making it a success.

On Wednesday, the final day of the Symposium, four sessions were held. The first session of the day was chaired by Tabata and included talks on "Meshless Methods and Coupled Meshless-Finite Element Methods," by Ted Belytschko of Northwestern University, followed by "A Wavelet Based Numerical Method," by Leland Jameson of Mitsubishi Heavy Industries, and finally a talk given by Yasuhiro Matsuda of Shinshu University on "Proposal of the Modified Galerkin Method for Unsteady Two-Dimensional Viscous Fluid Flow."

Ted Belytschko (Northwestern University)
Belytschko chaired Session 10, which began with a presentation by Walter Sturek of ARL on "Compressible Turbulent Viscous Modeling in an Adverse Pressure Gradient." Sturek's talk was followed by Takahiro Yamada of the Tokyo Institute of Technology, speaking on "A Bubble Element for Compressible Euler Equation," and Shoichi Fujima of Hiroshima University, who presented "An Application of Mortar Element Method to Flow Problems in the Primitive Variables."

Walter Sturek (ARL)
Sessions 11 and 12, chaired by Oshima and Noboru Kikuchi of the University of Michigan, were the final sessions of the Symposium. Session 11 included a talk given by Kikuchi on "A Homogenization Method for Fluid Flow Analysis Through Porous Media," followed by a talk on "Multiresolution Reproducing Kernel Particle Methods," by Wing Liu of Northwestern University. The final session of the symposium included presentations on "Finite Element Simulation of Vacuum Arc Remelting," by David Gartling of Sandia National Laboratories, "Die Swell Calculation by Finite Element Methods," by Yoji Shimazaki from Tokai University, and "Applications for Distributed Shared Memory in Structured and Unstructured Meshes," by Jerry Clarke (AHPCRC-Minnesota Supercomputer Institute, Inc.)

The Symposium ended with closing remarks by Tezduyar with the announcement that the next Symposium will be held in Tokyo and is tentatively scheduled for April 1998.