Title of article
VerificationandvalidationbenchmarksOriginalResearchArticle
Author/Authors
WilliamL.Oberkampf، نويسنده , , TimothyG.Trucano، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
28
From page
716
To page
743
Abstract
Verificationandvalidation(V&V)aretheprimarymeanstoassesstheaccuracyandreliabilityofcomputationalsimulations.V&Vmethodsandprocedureshavefundamentallyimprovedthecredibilityofsimulationsinseveralhigh-consequencefields,suchasnuclearreactorsafety,undergroundnuclearwastestorage,andnuclearweaponsafety.Althoughtheterminologyisnotuniformacrossengineeringdisciplines,codeverificationdealswithassessingthereliabilityofthesoftwarecoding,andsolutionverificationdealswithassessingthenumericalaccuracyofthesolutiontoacomputationalmodel.Validationaddressesthephysicsmodelingaccuracyofacomputationalsimulationbycomparingthecomputationalresultswithexperimentaldata.Codeverificationbenchmarksandvalidationbenchmarkshavebeenconstructedforanumberofyearsineveryfieldofcomputationalsimulation.However,nocomprehensiveguidelineshavebeenproposedfortheconstructionanduseofV&Vbenchmarks.Forexample,thefieldofnuclearreactorsafetyhasnotfocusedoncodeverificationbenchmarks,butithasplacedgreatemphasisondevelopingvalidationbenchmarks.Manyofthesevalidationbenchmarksarecloselyrelatedtotheoperationsofactualreactorsatnear-safety-criticalconditions,asopposedtobeingmorefundamental-physicsbenchmarks.Thispaperpresentsrecommendationsfortheeffectivedesignanduseofcodeverificationbenchmarksbasedonmanufacturedsolutions,classicalanalyticalsolutions,andhighlyaccuratenumericalsolutions.Inaddition,thispaperpresentsrecommendationsforthedesignanduseofvalidationbenchmarks,highlightingthecarefuldesignofbuilding-blockexperiments,theestimationofexperimentalmeasurementuncertaintyforbothinputsandoutputstothecode,validationmetrics,andtheroleofmodelcalibrationinvalidation.ItisarguedthattheunderstandingofpredictivecapabilityofacomputationalmodelisbuiltonthelevelofachievementinV&Vactivities,howcloselyrelatedtheV&Vbenchmarksaretotheactualapplicationofinterest,andthequantificationofuncertaintiesrelatedtotheapplicationofinterest.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895042
Link To Document