Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10357059 | Journal of Computational Physics | 2005 | 23 Pages |
Abstract
We propose a new two-level economical conservative scheme for short-range wake field calculation in three dimensions. The scheme does not have dispersion in the longitudinal direction and is staircase free (second order convergent). Unlike the finite-difference time domain method (FDTD), it is based on a TE/TM like splitting of the field components in time. Additionally, it uses an enhanced alternating direction splitting of the transverse space operator that makes the scheme computationally as effective as the conventional FDTD method. Unlike the FDTD ADI and low-order Strang methods, the splitting error in our scheme is only of fourth order. As numerical examples show, the new scheme is much more accurate on the long-time scale than the conventional FDTD approach.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Igor Zagorodnov, Thomas Weiland,