CSE Annual Research Symposium
KEYNOTE ADDRESS
SPEAKER: Prof. Marsha Berger
Courant Institute
New York University
New York, NY
DATE: Friday, April 23, 1999
TIME: 9:00 AM
PLACE: B02 Computer & Systems Research Laboratory,
1308 W. Main St, Urbana, IL
TITLE: Automatic High Performance Fluid Computations in Complex Geometry
ABSTRACT
We review aspects of our work on efficient and robust computational
methods for computing moderate to high Mach number flows in complicated
geometries. Our approach uses regular Cartesian meshes where the
geometry intersects the mesh in an essentially arbitrary way. We draw
on a variety of techniques in developing this approach. Adaptive
mesh refinement is used to concentrate the computational effort in
regions requiring greater resolution. The fluid flow equations need
to be discretized in a special way to handle the cut cells where the
geometry intersects the grid. Efficient algorithms from computational
geometry allow us to find the cut cells and set up the discretization
directly from a triangulation of the surface. We have taken great care
to structure the geometric and flow computations so as to make the best
use of cache-based moderately parallel computers.
BIOGRAPHY
Marsha Berger received her PhD in Computer Science from Stanford
University in 1982. Since then she has been in various positions at the
Courant Institute, where she is currently Professor of Computer Science.
She spends summers with collaborators at NASA Ames, and is a frequent
visitor to the DOE labs in Berkeley and Livermore.