✦ LIBER ✦
Charge conservation in electromagnetic PIC codes; spectral comparison of Boris/DADI and Langdon-Marder methods
✍ Scribed by P.J. Mardahl; J.P. Verboncoeur
- Book ID
- 104109727
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 954 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0010-4655
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✦ Synopsis
Non..charge conserving current collection algorithms for electromagnetic PIC plasma simulations may cause errors in Gauss's law. These errors arise from violations of the charge continuity equation, V • J = -dp/~t, which in turn cause errors in the hTotational part of E.
Two techniques for reducing these errors are examined and compared: a modified Marder correction which corrects electric fields locally and primarily affects short wavelengths, and a Boris divergence correction, which solves Poisson's equation to com:ct the -'--'-'-~-'~