Numericalsimulationsof10kWand110kWinductivelycoupledplasma(ICP)windtunnelswerecarriedouttostudyphysicalpropertiesoftheflowinsidetheICPtorchandvacuumchamberwithairastheworkinggas.Two-dimensionalcompressibleaxisymmetricNavierStokes(N-S)equationsthattookintoaccount11speciesand49chemicalreactionsofair,weresolved.Aheatsourcemodelwasusedtodescribetheheatingphenomenoninsteadofsolvingtheelectromagneticequations.Inthevacuumchamber,afour-temperaturemodelwascoupledwithN-Sequations.Numericalresultsforthe10kWICPwindtunnelarepresentedanddiscussedindetailasarepresentativecase.Itwasfoundthattheplasmaflowinthevacuumchambertendedtobeinlocalthermochemicalequilibrium.Tostudytheinfluenceofoperationconditionsontheflowfield,simulationswerecarriedoutfordifferentchamberpressuresand/orinputpowers.ThecomputationalresultsfortheabovetwoICPwindtunnelswerecomparedwithcorrespondingexperimentaldata.Thecomputationalandexperimentalresultsagreewell,thereforetheflowfieldsofICPwindtunnelscanbeclearlyunderstood.
