脉冲吹气对高负荷低压涡轮叶片边界层影响gt2013-94566.pdf
ProceedingsofASMETurboExpo2013:TurbineTechnicalConferenceandExposition
GT2013
June3-7,2013,SanAntonio,Texas,USA
GT2013-94566
THEEFFECTOFPULSEDBLOWINGONTHEBOUNDARYLAYEROFAHIGHLY
LOADEDLOWPRESSURETURBINEBLADE
∗
MarionMack,RolandBrachmanski,ReinhardNiehuis
UniversityoftheGerman
ArmedForcesMunich
InstituteofJetPropulsion
D-85577Neubiberg
Germany
Email:marion.mack@unibw.de
ABSTRACTpositionsbetweenpeakMachnumberandthetrailingedgewith
Theperformanceofthelowpressureturbine(LPT)canhotwireanemometryandpneumaticprobes.Experimentswere
varyappreciably,becausethiscomponentoperatesunderawideconductedwithandwithoutactuationundersteadyaswellaspe-
rangeofReynoldsnumbers.AthigherReynoldsnumbers,midriodicallyunsteadyinflowconditions.Theresultsshowthede-
andaftloadedprofileshavetheadvantagethattransitionofvelopmentoftheboundarylayeranditsinteractionwithincom-
suctionsideboundarylayerhappensfurtherdownstreamthaningwakes.Itisshownthatpulsedblowingacceleratestransition
atfrontloadedprofiles,resultinginlowerprofileloss.Atlower