High-order finite element method for plasma modeling

Shumlak, U.; Lilly, Robert; Miller, Scott T.; Reddell, Noah; Sousa, Éder

doi:10.1109/ppc.2013.6627593

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…The simulation results have shown that the reactive zones consistently increase in number for large values of Re and Π −1 h (i.e. cases 10,14,16,18,19) and might indicate the relative rise in the thermal equilibrium (similar to as seen in figure 13(c)).…”

Section: Plasma Front and Characteristic Thermal Lengthsmentioning

confidence: 52%

“…Finite element methods (FEMs), due to their inherent advantages as comprehensive numerical discretization approaches, particularly for the handling of unstructured partitions, are extensively used in diverse fields, including plasma flow modeling [15]. Among FEMs, the variational multiscale method (VMS) has demonstrated to provide a general and robust formulation for diverse types of problems, such as scalar transport, incompressible, compressible, reactive, and turbulent flows, radiation transport, magnetohydrodynamics [13], and plasma flows [16][17][18][19]. The VMS method starts with a Galerkin formulation of the problem given by equation (1), i.e.…”

Section: Computational Modelmentioning

confidence: 99%

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Characterization of the arc in crossflow using a two-temperature nonequilibrium plasma flow model

Bhigamudre¹,

Trelles²

2018

J. Phys. D: Appl. Phys.

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Arc discharge plasmas are extensively employed in diverse industrial applications such as spraying, welding, cutting, metallurgy, chemical and particle synthesis, resource recovery, etc. Among these, wire arc spraying and low-voltage circuit breakers are distinct applications that involve the interaction of an electric arc with a stream of working gas flow striking perpendicularly to it. Such a configuration is commonly referred to as the arc in crossflow. Greater understanding of the arc in crossflow can provide fundamental understanding of plasma-gas flow interactions and aid in equipment design and industrial process optimization [1].Wire arc spraying is a materials deposition technique used in applications such as corrosion and oxidation prevention, abrasion resistance, aircraft components, and medical implants that provides high material and energy efficiencies with lower capital and operating costs [2]. Low-voltage circuit breakers are one of the most widely used electrical safety components in battery systems, data centers, portable power devices, industrial machinery, switch gears, power breakers, etc. Figure 1 shows schematics of the wire arc spraying process and a low-voltage circuit breaker. The wire arc spraying system consists of metallic wires fed continuously to act as

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Section: Plasma Front and Characteristic Thermal Lengthsmentioning

confidence: 52%

Section: Computational Modelmentioning

confidence: 99%

Characterization of the arc in crossflow using a two-temperature nonequilibrium plasma flow model

Bhigamudre¹,

Trelles²

2018

J. Phys. D: Appl. Phys.

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“…II are solved using a generalized unstructured grid finite volume solver, USim [18][19][20]. Though multi-fluid electromagnetic solvers have been developed throughout the years by several researchers [23][24][25][26][27][28][29][30], the present solver is the first solver using an unstructured formulation and running on an unstructured grid [19] as prior codes were based on multi-block logically Cartesian grids. The flux reconstruction on the cell faces is carried out using second order accurate Monotonic Upstream-Centered Scheme for Conservation Laws (MUSCL) [31].…”

Section: E Solution Methodologymentioning

confidence: 99%

Modeling Radio Communication Blackout and Blackout Mitigation in Hypersonic Vehicles

Kundrapu¹,

Loverich²,

Beckwith³

et al. 2015

Journal of Spacecraft and Rockets

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A procedure for the modeling and analysis of radio communication blackout of hypersonic vehicles is presented. The weakly ionized plasma generated around the surface of a hypersonic reentry vehicle is simulated using full Navier-Stokes equations in multi-species single fluid form. A seven species air chemistry model is used to compute the individual species densities in air including ionization -plasma densities are compared with experiment. The electromagnetic wave's interaction with the plasma layer is modeled using multi-fluid equations for fluid transport and full Maxwell's equations for the electromagnetic fields. The multi-fluid solver is verified for a whistler wave propagating through a slab. First principles radio communication blackout over a hypersonic vehicle is demonstrated along with a simple blackout mitigation scheme using a magnetic window. Draft copy for AIAA Journal of Spacecraft and Rockets

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Investigation of flow regimes in arc plasma–gas interactions using a two-temperature arc in crossflow model

Bhigamudre

Trelles

2020

Physics of Plasmas

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The perpendicular impingement of a gas stream on an electric arc, a configuration known as the arc in crossflow, is of primary relevance in the study of plasma–gas interactions as well as in industrial applications such as circuit breakers and wire-arc spraying. The flow dynamics in the arc in crossflow are the result of coupled fluid-thermal-electromagnetic phenomena accompanied by large property gradients, which can produce significant deviations from Local Thermodynamic Equilibrium (LTE) among electrons and gas species. These characteristics can lead to the establishment of distinct flow regimes depending on the relative values of the controlling parameters of the system, such as inflow velocity, arc current, and inter-electrode spacing. A two-temperature non-LTE model is used to investigate the arc dynamics and the establishment of flow regimes in the arc in crossflow. The plasma flow model is implemented within a nonlinear Variational Multiscale (VMS) numerical discretization approach that is less dissipative and, hence, better suited to capture unstable behavior than traditional VMS methods commonly used in computational fluid dynamics simulations. The Reynolds and the Enthalpy dimensionless numbers, characterizing the relative flow strength and arc strength, respectively, are chosen as the controlling parameters of the system. Simulation results reveal the onset of dynamic behavior and the establishment of steady, periodic, quasi-periodic, and chaotic or potentially turbulent regimes, as identified by distinct spatiotemporal fluctuations. The computational results reveal the role of increasing the relative arc strength on enhancing flow stability by delaying the growth of fluctuating and unstable flow behavior.

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High-order finite element method for plasma modeling

Cited by 3 publications

References 22 publications

Characterization of the arc in crossflow using a two-temperature nonequilibrium plasma flow model

Characterization of the arc in crossflow using a two-temperature nonequilibrium plasma flow model

Modeling Radio Communication Blackout and Blackout Mitigation in Hypersonic Vehicles

Investigation of flow regimes in arc plasma–gas interactions using a two-temperature arc in crossflow model

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