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Explicit high-order noncanonical symplectic algorithms for ideal two-fluid systems

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4967276· OSTI ID:1535287
 [1];  [2];  [3];  [4];  [5];  [4];  [4]
  1. Univ. of Science and Technology of China, Hefei, Anhui (China). School of Nuclear Science and Technology and Dept. of Modern Physics; Chinese Academy of Sciences (CAS), Hefei, Anhui (China). Key Lab. of Geospace Environment; DOE/OSTI
  2. Univ. of Science and Technology of China, Hefei, Anhui (China). School of Nuclear Science and Technology and Dept. of Modern Physics; Princeton Univ., Princeton, NJ (United States). Plasma Physics Lab.
  3. Univ. of Texas, Austin, TX (United States). Dept. of Physics and Inst. for Fusion Studies
  4. Univ. of Science and Technology of China, Hefei, Anhui (China). School of Nuclear Science and Technology and Dept. of Modern Physics; Chinese Academy of Sciences (CAS), Hefei, Anhui (China). Key Lab. of Geospace Environment
  5. Chinese Academy of Sciences (CAS), Hefei, Anhui (China). Inst. of Plasma Physics
Here, an explicit high-order noncanonical symplectic algorithm for ideal two-fluid systems is developed. The fluid is discretized as particles in the Lagrangian description, while the electromagnetic fields and internal energy are treated as discrete differential form fields on a fixed mesh. With the assistance of Whitney interpolating forms, this scheme preserves the gauge symmetry of the electromagnetic field, and the pressure field is naturally derived from the discrete internal energy. The whole system is solved using the Hamiltonian splitting method discovered by He et al. [Phys. Plasmas 22, 124503 (2015)], which was been successfully adopted in constructing symplectic particle-in-cell schemes. Because of its structure preserving and explicit nature, this algorithm is especially suitable for large-scale simulations for physics problems that are multi-scale and require long-term fidelity and accuracy. The algorithm is verified via two tests: studies of the dispersion relation of waves in a two-fluid plasma system and the oscillating two-stream instability.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
FG02-04ER54742
OSTI ID:
1535287
Alternate ID(s):
OSTI ID: 1331403
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 23; ISSN PHPAEN; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Action principles for relativistic extended magnetohydrodynamics: A unified theory of magnetofluid models journal February 2017
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