PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Kris Jenssen, Yuxi Zheng.

Title:Discontinuous Galerkin Methods for Problems in Plasma Physics
Seminar:Computational and Applied Mathematics Colloquium
Speaker:James Rossmanith, Department of Mathematics, University of Wisconsin
Abstract:
Plasma is a state of matter in which electrons disassociate from their nuclei, resulting in electrically conducting clouds of positively and negatively charged ions. Mathematically, plasma can be modeled on a variety of scales, resulting in various kinetic, fluid, and hybrid models. In this talk we first we consider the simplest plasma fluid model: the ideal MHD (magnetohydrodynamic) system. We review some of the mathematical difficulties associated with the divergence-free condition on the magnetic field. We will then describe a class of discontinuous Galerkin (DG) methods for approximately solving this system. Next we consider two genuinely two-fluid models of plasma: Euler-Maxwell (5-moments) and extended Euler-Maxwell (10-moments). We focus our discussion on the problem of collisionless magnetic reconnection. We first describe this problem and then our efforts to apply two-fluid models to it, again using discontinuous Galerkin methods.

Room Reservation Information

Room Number:MB106
Date:10 / 30 / 2009
Time:03:35pm - 04:25pm