简介：Inthepresentpaper,anonlinearmulti“actuatordisk”modelisproposedtoanalyzethedynamicbehaviorofflowinstabilities,includingrotatingstallandsurge,inhighspeedmultistageaxialcompressors.Themodeldescribestheductflowfieldsusingtwodimensional,compressibleandunsteadyEulerequations,andaccountsfortheinfluencesofdownstreamplenumandthrottleinthesystemaswell.Itreplaceseachbladerowofmultistagecompressorewithadisk.Fornumericalcalculations,thetimemarchingprocedure,usingMacCormacktwostepsscheme,isused.Themainpuposeofthispaperistopredictthemechanismoftwodimensionalshortwavelengthrotatingstallinceptionandtheinterationbetweenbladerowsinhighspeedmultistagecompressors.Ithasbeendemonstratedthatthemodelhastheabilitytopredictthosephenomena,andtheresultsshowthatsomesystemparametershaveastrongeffectonthestallfeaturesaswell.Resultsforafivestagehighspeedcompressorareanalyzedindetail,andcomparisonwiththeexperimentaldatademonstratesthatthemodelandcalculatingresultsarereliable.
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