Engineering Physics Colloquium
Tuesday, November 20
4:00 PM to 5:00 PM
106 Engineering Research Building
Speaker: Professor Carl Sovinec, University of Wisconsin-Madison.
"Some Mechanics of Magnetohydrodynamics and How It Affects Plasma Simulation"
Abstract: Operation of the ITER magnetic confinement experiment will require control of macroscopic stability to avoid or to mitigate disruptions of the plasma discharge and other transient bursts of energy that can damage the device. Large-scale simulation is contributing to our understanding of the underlying dynamics, but improvements are needed for modeling realistic parameters over the time-scales of interest. Basic properties of ideal magnetohydrodynamics influence our ability to simulate non-ideal evolution. Analogies with continuum mechanics for linearly elastic media help illustrate important effects and why they are demanding for numerical representations. Results from numerical harmonic analysis with standard and modified representations demonstrate a promising new approach that can be ported to non-ideal plasma simulation.
Biography: Professor Sovinec is currently a professor with the Engineering Physics department at the University of Wisconsin – Madison. He received his BS in Physics from the United States Air Force Academy, MS in Nuclear Engineering from the University of Washington, and PhD in Physics from Wisconsin. His research interests lie in the numerical simulation of plasmas and fluids. His recent efforts have focused on simulating nonlinear electromagnetic behavior in magnetically confined plasmas, where the extreme stiffness and anisotropy resulting from the magnetic field provide great challenges for numerical approaches.
Event Note: 3:45pm refreshments will be served.