Energy-preserving coupling of explicit particle-in-cell with Monte Carlo collisions.
basic_science · Level V
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- Record sourced from PubMed, PMID 40103051.
- Also identified by DOI 10.1103/PhysRevE.111.025306.
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Abstract
The particle-in-cell (PIC) and Monte Carlo collisions (MCC) methods are workhorses of many numerical simulations of physical systems. Recently, it was pointed out that, while the two methods can be exactly-or nearly-energy-conserving independently, combining the two leads to anomalous numerical heating. This paper reviews the standard explicit PIC-MCC algorithm, elucidates the origins of the anomalous numerical heating, and explains how to couple the two methods such that the anomalous numerical heating is avoided.