Author/Authors :
H.Staedtke، نويسنده , , G.Franchello، نويسنده , , B.Worth، نويسنده , , U.Graf، نويسنده , , P.Romstedt، نويسنده , , A.Kumbaro، نويسنده , , J.Garc?a-Cascales، نويسنده , , H. Paillère، نويسنده , , H.Deconinck، نويسنده , , Mario Ricchiuto and Herman Deconinck، نويسنده , , B.Smith، نويسنده , , F.DeCachard، نويسنده , , E.F.Toro، نويسنده , , E. Romenski، نويسنده , , S.Mimouni، نويسنده ,
Abstract :
ThispapersummarizesthecumulativeworkundertakenintheframeoftheEUshared-costaction“ASTARProject”—thecurrentstatusandfutureperspectivesinthefieldofadvancednumericalsimulationofthree-dimensionaltwo-phaseflowprocesses.This3-yearrunningproject,whichstartedinSeptember2000,involvessevenpartnerinstitutesfromaroundEurope.Specificemphasisisgiventothefurtherdevelopmentofcharacteristic-basedupwinddifferencing(alsocalled“hyperbolic”)numericalmethodsandtheirapplicationtotransienttwo-phaseflow.Thepapersummarizesthecommonbasisadoptedforthephysicalandmathematicalmodellingoftwo-phaseflowintheformofasingle-pressure“two-fluid”modelandthevariousnumericalsolutiontechniquesdevelopedbythepartners.Severalbenchmarkexercisesarepresentedwhichhavebeenusedasverificationandassessmentproceduresforcomparingthedifferentmodellingandnumericalapproaches.Commentsonthesuitability,accuracy,numericalstability,algorithmicrobustnessandcomputationalefficiencyserveasindicatorsforthepossibleextensionofthesemethodstofuturecodedevelopmentactivities.TwofurthertasksoftheASTARprojectdealtwiththeproductionofhighqualityexperimentalfielddataintheLINXfacilityofPSI,forthevalidationofCFDmodelsfortwo-phasebubblyflow,andthecouplingofatwo-phaseCFDmodulewithasystemcode.Detailsofthesetaskshavebeenpublishedseparately,andwillnotberecalledinthispaper.
