Open AccessThe Center for Multiscale Plasma Dynamics, Final Report
Author(s) -
T. I. Gombosi
Publication year - 2008
Language(s) - English
Resource type - Reports
DOI - 10.2172/939480
Subject(s) - microscale chemistry , cascade , multiscale modeling , statistical physics , computation , scale (ratio) , turbulence , range (aeronautics) , magnetohydrodynamics , acceleration , plasma , inertial frame of reference , computer science , computational science , physics , aerospace engineering , classical mechanics , mechanics , algorithm , mathematics , nuclear physics , engineering , chemistry , computational chemistry , mathematics education , quantum mechanics , chemical engineering
The University of Michigan participated in the joint UCLA/Maryland fusion science center focused on plasma physics problems for which the traditional separation of the dynamics into microscale and macroscale processes breaks down. These processes involve large scale flows and magnetic fields tightly coupled to the small scale, kinetic dynamics of turbulence, particle acceleration and energy cascade. The interaction between these vastly disparate scales controls the evolution of the system. The enormous range of temporal and spatial scales associated with these problems renders direct simulation intractable even in computations that use the largest existing parallel computers. Our efforts focused on two main problems: the development of Hall MHD solvers on solution adaptive grids and the development of solution adaptive grids using generalized coordinates so that the proper geometry of inertial confinement can be taken into account and efficient refinement strategies can be obtained