Alternating-Order Interpolation in a Charge-Conserving Scheme for Particle-In-Cell Simulations
Plasma Physics
2012-09-14 v4 Computational Physics
Abstract
We discuss the interpolation of the electric and magnetic fields within a charge-conserving Particle-In-Cell scheme. The choice of the interpolation procedure for the fields acting on a particle can be constrained by analyzing conservation of the energy and the particle generalized momentum. The better conservative properties are achieved, if the alternating-order form-factor is used for interpolation, which combines the lower-order and higher-order interpolation from integer and semi-integer points of a staggered grid. This approach allows us to significantly reduce noise in the charge conserving scheme and improves both the results quality and the computational efficiency.
Cite
@article{arxiv.1101.0809,
title = {Alternating-Order Interpolation in a Charge-Conserving Scheme for Particle-In-Cell Simulations},
author = {Igor V. Sokolov},
journal= {arXiv preprint arXiv:1101.0809},
year = {2012}
}
Comments
18 pages, 3 figures