*********************************
There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
*********************************
Tim Warburton
Associate Professor
Rice University
Department of Computational Applied Mathematics
For more information please contact Dr. George Biros at gbiros@cc.gatech.edu
Title:
A Low Storage, High Order Discontinuous Galerkin Method for Curvilinear Domains
Abstract:
A range of important issues relating to the practical application of discontinuous Galerkin time-domain (DGTD) method for wave propagation will be discussed.
Several issues arise in time stepping for realistic simulations using DGTD.
Multiple intrinsic length and time scales are induced by geometry, material properties, mesh generation and the use of high order polynomial approximation. I will describe a simple filtering process that allows us to reduce the anomalously large gradients intrinsic to high-order polynomial approximations and consequently use a larger time step. Additionally, local time stepping algorithms will be demonstrated for meshes with a large range of element sizes.
Recently we have been testing high performance implementations for DGTD on graphics processing units. The results are very promising. I will discuss the performance of the low storage DGTD for curvilinear domains on this platform and how its design was influenced by the memory constraints of these high performance compute devices.
Examples will be shown for electromagnetic scattering and fluid flow.
http://www.caam.rice.edu/~timwar
~~~~~~~~~~~~~~~~
You are cordially invited to attend a reception in the lounge next to Klaus 1324 before the seminar to chat informally with faculty and students. PIZZA will be provided.
To receive future announcements, please sign up to the cse-seminar email list:
https://mailman.cc.gatech.edu/mailman/listinfo/cse-seminar
