本身的内在性质。但这种性质是非线性的性质，而不能用线性稳定性理论来解释。因为即使按线性稳定性理论是稳定的，但引入的扰动有较大幅值时，仍能激发大尺度涡。
要害词：compreiblemixinglayerenhancementofmixingshocklettheoryofhydrodynamicstabilitydirectnumericalsimulation
可压缩剪切层强化混合小激波流动稳定性理论直接数值模拟
ontheenhancementofthemixingofa2-dsupersonicmixinglayer
atract
theenhancementofthemixinginsupersonicflowsisanimportantproblemforthefuturedevelopmentofaeronauticalandaeroacetechnology.fora2-dmixinglayer,accordingtothelinearstabilitytheory,whenthecompreibilityeffectincreases,theitabilityofthemixinglayerbecomesleandleobvious.thus,itwillbemoredifficultforthegenerationoflargescalevort
ices,makingthemixingleandleefficient.itisdifficulttoenhancethemixingeffectbymerelycontrollingthedevelopmentofitablewave.therefore,newmethodisnecearytoexcitethelargesizestructuresforsupersonicmixinglayer.
in1993,wang%26fiedlerfoundanewmethod,whichwasdifferentfromthetraditionalmethod,andwasabletogreatlyenhancethemixingforincompreiblemixinglayerinatube.inthispaper,theprimarygoalwastoseewhetherthesamemethodiseffectiveforcompreiblemixinglayer,eeciallyforsupersonicmixinglayer.inaddition,wealsostudiedifshockletswouldbegeneratedduetothegenerationoflarge-scalestructures,andhowtheshockletswouldinfluencetheflowcharacteristic.thisstudyisnecearyforthedevelopmentofanonlinearstabilitytheoryforsupersonicflows.
experimentsforsupersonicflowswithhighmachnumberareextremelydifficult.therefore,studyingthisproblem,weusedthemethodofdirectnumericalsimulation.
theworkinthispapercoistsoft
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