Hybrid Particle-Continuum Methods for Nonequilibrium Gas and Plasma Flows

Journal Article · Fri May 20 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3562702· OSTI ID:21511590

Boyd, Iain D ^[1]

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1. Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI (United States)

Two different hybrid particle-continuum methods are described for simulation of nonequilibrium gas and plasma dynamics. The first technique, used for nonequilibrium hypersonic gas flows, uses either a continuum description or a particle method throughout a flow domain based on local conditions. This technique is successful in reproducing the results of full particle simulations at a small fraction of the cost. The second method uses a continuum model of the electrons combined with a particle description of the ions and atoms for simulating plasma jets. The physical accuracy of the method is assessed through comparisons with plasma plume measurements obtained in space. These examples illustrate that the complex physical phenomena associated with nonequilibrium conditions can be simulated with physical accuracy and numerical efficiency using such hybrid approaches.

• OSTI ID: 21511590
• Journal Information: AIP Conference Proceedings, Vol. 1333, Issue 1; Conference: 27. international symposium on rarefied gas dynamics, Pacific Grove, CA (United States), 10-15 Jul 2010; Other Information: DOI: 10.1063/1.3562702; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
ATOMS
COLLISIONS
COMPARATIVE EVALUATIONS
EFFICIENCY
ELECTRONS
GAS FLOW
HYPERSONIC FLOW
IONS
MOLECULAR DYNAMICS METHOD
NUMERICAL ANALYSIS
PARTICLES
PLASMA
PLASMA JETS
PLUMES
SIMULATION
CALCULATION METHODS
CHARGED PARTICLES
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
FLUID FLOW
LEPTONS
MATHEMATICS