Title of article
DecompositionsofbubblyflowPIVvelocityfieldsusingdiscretewaveletsmulti-resolutionandmulti-sectionimagemethodOriginalResearchArticle
Author/Authors
Je-EunChoi، نويسنده , , MasahiroTakei، نويسنده , , Deog-HeeDoh، نويسنده , , Hyo-JaeJo، نويسنده , , YassinA.Hassan، نويسنده , , JavierOrtiz-Villafuerte، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
9
From page
2055
To page
2063
Abstract
Currently,wavelettransformsarewidelyusedfortheanalysesofparticleimagevelocimetry(PIV)velocityvectorfields.Thisisbecausethewaveletprovidesnotonlyspatialinformationofthevelocityvectors,butalsoofthetimeandfrequencydomains.Inthisstudy,adiscretewavelettransformisappliedtorealPIVimagesofbubblyflows.Thevectorfieldsobtainedbyaself-madecross-correlationPIValgorithmwereusedforthediscretewavelettransform.Theperformancesofthediscretewavelettransformswereinvestigatedbychangingthelevelofpowerofdiscretization.Theimagesdecomposedbywaveletmulti-resolutionshowedconspicuouscharacteristicsofthebubblyflowsforthedifferentlevels.Ahighspatialbubbleconcentratedareacouldbeevaluatedbytheconstructeddiscretewavelettransformalgorithm,inwhichhigh-leveledwaveletsplaydominantrolesinrevealingtheflowcharacteristics.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895160
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