Title of article
Aninvestigationoftwo-phaseflowinstabilityusingwaveletsignalextractiontechniqueOriginalResearchArticle
Author/Authors
ZhiShang، نويسنده , , RuichangYang، نويسنده , , XuewuCao، نويسنده , , YanhuaYang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
7
From page
157
To page
163
Abstract
Whentheoscillationperiodsoftheinstabilityoftwo-phaseflowaresoughtwithtraditionalmethodsofsignalanalysis,generallytheFouriertransformmustbeemployedandthentheoscillationperiodswillbegottenatthelocationofthelocalmaximumamplitudeoffrequencytransform.However,Fouriertransformwillbedifficulttoclearlyanalyzetheunsteadysignalsespeciallywhenthesignalsincludemanypeaksandthenoiseinterferenceisnotgeneratedbywhitenoiseinmanyareasofpracticalengineeringliketheoscillationoftheinstabilityoftwo-phaseflow.ThemosteffectivesolvingmethodforthedifficultyofFouriertransformistoanalyzethesignalsdirectlyintimedomain.Waveletanalysisisabletosearchouttheperiodsfromtimedomaindirectly.ItalsohasmoreexcellentlocalcharacteristicsthanFourieranalysisinthebothoftimeandfrequencydomains.Inthispaper,notonlyisadirectdetectingmethodoftheoscillationperiodssuccessfullyappliedbasedonthewaveletsignalextractiontechniques,butalsotheoscillationofdensitywavetypeofTYPEIisfoundasakindofoscillationswithahigh-frequencyharmonization.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894786
Link To Document