Conditions and a physical mechanism for plasma mitigation of shock wave in a supersonic flow

Research output: Contribution to journalArticle

Abstract

Wind tunnel experiments show that plasma generated by on-board discharges can significantly weaken the shock wave generated in front of a 30° half-angle truncated-cone model placed in a Mach 2.5 flow. Experimental results indicate that, in order to give rise significant effect on shock waves, plasma has to be generated in the region upstream of the baseline shock front and has to have a symmetrical spatial distribution with respect to the axis of the model. Experimental results also exclude the thermal effect as a possible cause of the observed shock wave mitigation. A physical mechanism of the observed nonthermal plasma effect on shock waves is presented. Analysis shows that a symmetrically distributed plasma spike in front of the shock can effectively deflect the incoming flow symmetrically. The required electron density of the plasma spike is estimated.

Original languageEnglish (US)
Pages (from-to)161-165
Number of pages5
JournalPhysica Scripta
Volume70
Issue number2-3
DOIs
StatePublished - Aug 2004

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Supersonic Flow
supersonic flow
Shock Waves
shock waves
Plasma
Spike
spikes
Shock
Truncated cone or frustum
Thermal Effects
Wind Tunnel
shock fronts
Experimental Results
wind tunnels
Spatial Distribution
upstream
temperature effects
Baseline
cones
spatial distribution

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Conditions and a physical mechanism for plasma mitigation of shock wave in a supersonic flow. / Kuo, Spencer.

In: Physica Scripta, Vol. 70, No. 2-3, 08.2004, p. 161-165.

Research output: Contribution to journalArticle

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