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PolyPIC: The polymorphic-particle-in-cell method for fluid-kinetic coupling
KTH, School of Electrical Engineering and Computer Science (EECS), Computational Science and Technology (CST).ORCID iD: 0000-0003-0639-0639
KTH, School of Electrical Engineering and Computer Science (EECS), Computational Science and Technology (CST).
KTH, School of Electrical Engineering and Computer Science (EECS), Computational Science and Technology (CST).
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2018 (English)In: Frontiers in Physics, E-ISSN 2296-424X, Vol. 6, no OCT, article id 100Article in journal (Refereed) Published
Abstract [en]

Particle-in-Cell (PIC) methods are widely used computational tools for fluid and kinetic plasma modeling. While both the fluid and kinetic PIC approaches have been successfully used to target either kinetic or fluid simulations, little was done to combine fluid and kinetic particles under the same PIC framework. This work addresses this issue by proposing a new PIC method, PolyPIC, that uses polymorphic computational particles. In this numerical scheme, particles can be either kinetic or fluid, and fluid particles can become kinetic when necessary, e.g., particles undergoing a strong acceleration. We design and implement the PolyPIC method, and test it against the Landau damping of Langmuir and ion acoustic waves, two stream instability and sheath formation. We unify the fluid and kinetic PIC methods under one common framework comprising both fluid and kinetic particles, providing a tool for adaptive fluid-kinetic coupling in plasma simulations.

Place, publisher, year, edition, pages
Frontiers Media S.A. , 2018. Vol. 6, no OCT, article id 100
Keywords [en]
Computational plasma physics, Fluid-kinetic simulations, Fluid-particle-in-cell, Plasma simulations, Polymorphic-particle-in-cell
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-247149DOI: 10.3389/fphy.2018.00100ISI: 000446344600001Scopus ID: 2-s2.0-85055085581OAI: oai:DiVA.org:kth-247149DiVA, id: diva2:1313999
Note

QC 20190507

Available from: 2019-05-07 Created: 2019-05-07 Last updated: 2019-05-07Bibliographically approved

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Markidis, StefanoOlshevsky, VyacheslavLaure, Erwin

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