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

Journal Article · · Journal of Physics. D, Applied Physics
 [1];  [2]
  1. Univ. of Massachusetts, Lowell, MA (United States); University of Massachusetts Lowell, Department of Mechanical Engineering
  2. Univ. of Massachusetts, Lowell, MA (United States)
Diverse industrial applications such as circuit breakers and wire arc spraying involve the interaction between an electric arc and a stream of gas impinging perpendicular to it, a configuration commonly referred to as the arc in crossflow. The arc in crossflow is simulated using a three-dimensional time-dependent two-temperature (heavy-species and electrons) plasma flow model to better capture plasma-gas interactions and deviations from Local Thermodynamic Equilibrium (LTE). The coupled fluid-electromagnetic flow model is solved in a monolithic manner using Variational Multiscale Finite Element Method. Simulation findings are validated with experimental findings and contrasted against results obtained with a LTE model. Results from the two-temperature model corroborate experimental observations while providing quantification of the deviation between heavy-species and electron temperatures. The model is used to characterize the arc in crossflow as a function of the Reynolds and Enthalpy dimensionless numbers, which encapsulate the inter-dependence among the main parameters total current, inflow velocity, and inter-electrode spacing. Furthermore, the characterization revealed the behavior of arc shape, voltage drop, arc power, the degree of nonequilibrium, as well as the characteristic plasma front thickness, with varying controlling parameters.
Research Organization:
Univ. of Massachusetts, Lowell, MA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Grant/Contract Number:
SC0018230
OSTI ID:
1623378
Alternate ID(s):
OSTI ID: 1612888
OSTI ID: 23014094
Journal Information:
Journal of Physics. D, Applied Physics, Journal Name: Journal of Physics. D, Applied Physics Journal Issue: 1 Vol. 52; ISSN 0022-3727
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Simulating Turbulent Thermal Plasma Flows for Nanopowder Fabrication journal January 2020
Investigation of flow regimes in arc plasma–gas interactions using a two-temperature arc in crossflow model journal February 2020

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