Numerical investigation of nonequilibrium plasma flows in constrictor- and segmented-type arc heaters

Yusuke Takahashi, Hisashi Kihara, Ken-Ichi Abe

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15 Citations (Scopus)

Abstract

Numerical simulations are carried out and the distributions of flowfield properties are obtained for nonequilibrium flows in a 20kWconstrictor-type and a 750 kW segmented-type arc-heated wind tunnel. In these arc heaters, it is confirmed that each plasma flow is highly in nonequilibrium and arc discharge plays critical roles. The flowfield is described by the Navier-Stokes equations with a multitemperature model. To validate the present numerical model, the numerical solutions are compared with the corresponding experimental data. The flow characteristics in the 20 and 750 kW arc heaters (e.g., the arc discharge and the supersonic expansion) become clear through the present simulations. In particular, the computed results for the 20 kW arc heater indicate almost full dissociation/ionization reactions and thermochemical equilibrium in the constrictor section, while strong nonequilibrium clearly appears in the nozzle section.

Original languageEnglish
Pages (from-to)31-39
Number of pages9
JournalJournal of Thermophysics and Heat Transfer
Volume24
Issue number1
DOIs
Publication statusPublished - Jan 1 2010

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constrictors
nonequilibrium plasmas
magnetohydrodynamic flow
heaters
arcs
arc discharges
nonequilibrium flow
flow characteristics
wind tunnels
Navier-Stokes equation
nozzles
simulation
dissociation
ionization
expansion

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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