SciDAC - Center for Plasma Edge Simulation - General Atomics Support of NYU Collaborations

Hinton, F.L. ; Staff, Project

Energy and Electromagnetic Systems Group, General Atomics, San Diego, California

关键词: Coulomb Collisions;    Langevin Method;    Lattice-Boltzmann;    73 Nuclear Physics And Radiation Physics Coulomb Collisions;    Particle Codes;   

DOI  :  10.2172/1034604
RP-ID  :  DOE_ER54847 Final Sci.Tech Report
RP-ID  :  FC02-06ER54847
RP-ID  :  1034604

美国|英语

来源: UNT Digital Library

【 摘 要 】

Methods for implementing Coulomb collisions in particle codes were studied and developed. At first, a lattice-Boltzmann method seemed promising. After considering this in more detail, it was found not to be efficient enough. A method was then sought for implementing collisional effects as changes in particle weights, instead of changes in velocities. Although this may eventually be done, it was decided that a Langevin method would be more straightforward to develop, since it was possible to build on previous work. The rest of the contract period was spent developing the Langevin method, which ultimately resulted in a published paper, in April 2008 [F.L. Hinton, Phys. Plasma 15, 042501 (2008)].