CSAR Seminar
SPEAKER: Damrong Guoy,
UIUC/CSAR
TITLE:
Parallel Mesh Adaptation for Highly Evolving Geometries
with Application to Solid Propellant Rocket Simulation
DATE: Wednesday, October 3, 2007
TIME: 12:30-1:00 P.M.
PLACE: 2240 DCL
1304 W. Springfield Ave., Urbana, IL
ABSTRACT
We describe our parallel 3-D surface and volume mesh modification
strategy for large-scale simulation of physical systems with
dynamically changing domain boundaries. Key components include an
accurate, robust, and efficient surface propagation scheme, frequent
mesh smoothing without topology changes, infrequent remeshing at
regular intervals or when triggered by declining mesh quality, a novel
hybrid geometric partitioner, accurate and conservative solution
transfer to the new mesh, and a high degree of automation. We apply
these techniques to simulations of internal gas flows in firing solid
propellant rocket motors, as various geometrical features in the
initially complex propellant configuration change dramatically due to
burn-back. Smoothing and remeshing ensure that mesh quality remains
high throughout these simulations without dominating the run time.
This is joint work with many CSAR staff including Terry Wilmarth,
Phillip Alexander, Xiangmin Jiao, Michael Campbell, Eric Shaffer,
Robert Fiedler, William Cochran, and Pornput Suriyamongkol.