简介：Ｆａｒａｄａｙ－ｃｕｐＣｏｎｔｒｏｌａｎｄＭｅａｓｕｒｅｍｅｎｔＰｒｏｇｒａｍＢａｓｅｄｏｎＭＳＷｉｎｄｏｗｓ￥ＺｈａｎｇＧｕｉｘｕａｎｄＬｕＸｕｅｑｉｕＡｎｅｗｆａｒａｄａｙ－ｃｕｐｃｏｎｔｒｏｌｐｒｏｇｒａｍｗｈｉｃｈｒｕｎｓｏｎＭＳＷｉｎｄｏｗ...

简介：Whenmeasurementsareperformedinhighspeed,small-scalecompressors,theuseofcurvedglasswindowsisrequiredinordertoavoidanymismatchbetweenthemeasurementwindowandthecasing.However,theglasscurvatureleadstoopticaldistortions,whichhinderacceptablemeasurementsandcanevenpreventtheacquisitionofanydata.Thus,anoriginalopticalassembly,whichconsistsininsertingasimpleandinexpensivecorrectivewindowbetweenthefrontallensoftheanemometerandtheshroudwindow,isproposed.Thewayofdeterminingthegeometriccharacteristicsandthepositionofthiscorrectivewindow,whichrestoresveryacceptablefoci,ispresentedinthepaper.Thereliabilityofthiscorrectiveopticalassemblyishighlightedbycomparativemeasurementsinatestcase.Usingsuchanopticalsetting,L2Fmeasurementswererealisedalongasection,downstreamoftheinletguidevane(IGV)ofatransoniccompressorstage.Thespatialresolutionleadstoagooddescriptionoftheinteractionofthewakewiththeobliqueshockemanatingfromtheleadingedgeoftherotor.Aphenomenologicalstudyofthewake/shockinteractionwithachangeofframeisrealisedusingthestreamwiseequationofthetransportofvorticity.