Title of article
Two-dimensionalsimulationofdropdeformationandbreakupataroundthecriticalWebernumberOriginalResearchArticle
Author/Authors
Ri-QiangDuan، نويسنده , , SeiichiKoshizuka، نويسنده , , YoshiakiOka، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
12
From page
37
To page
48
Abstract
Thebreakupoftwo-dimensionalliquiddropsisnumericallyinvestigatedataroundthecriticalWebernumber.TheMovingParticleSemi-implicit(MPS)methodisusedtosolvetheunsteadyNavier–Stokesequationsforboththedropsandtheambientfluid.Thetwodominantforcesaffectingdropbreakup,pressuredragandsurfacetensionforce,areverifiedusingthetwobenchmarks:pressuredistributiononthesurfaceofacylinderinauniformflowandoscillationofasquaredropundersurfacetensionforce.Theresultsshowthatthebreakupprocessoccursintwostages.Duringthefirststage,thedropsbecomestretchedandthinnednormaltotheflowdirectionoftheambientfluid.Duringthesecondstage,detachedpointsappearonthesurfaceofthedrops,whichareascribedtotheunstablegrowthofsurfacewaves.Thepost-breakuptopologyofthedropsisdependentonthevalueoftheWebernumber:thelargertheWebernumberis,themoredetachedpointsonthesurfaceofthedropsemerge.Anotherfeaturecommonlysharedinthetwostagesisthatsomefinefragmentationsarestrippedfromtheequatorialedgesofthedrops.ThecriticalWebernumberispredictedtobe13foruraniumdioxidedropsinwater,atwhichbreakupregimeisconsistentwiththeso-calledvibrationregime.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894596
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