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|
|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
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
Room Reservation Information
|Date:||10 / 30 / 2009|
|Time:||03:35pm - 04:25pm|