%0 Journal Article
%T openfoambasednumericalsimulationonrisingcharacteristicsofbubbles
%A caijiejin
%A zengqingyun
%A watanabetadashi
%J ÈÈÁ¦·¢µç
%P 28-31
%D 2013
%X theopensourcesoftwareopenfoamwasappliedtosimulatethesinglerisingbubble'sbehavior.atfirst,therisingspeedandshapeofthebubbleinreferencesweresimulated.theresultsfitwellwiththeexperimentaldata,thustheaccuracyofthecalculationmodelwasverified.variationoftherisingspeed,pressureandaspectratioofthebubblewithdifferentinitialdiametersagainstthetime,andeffectofthebonumberandmonumberonbubbleshapeweresystematicallyinvestigatedbyemployingthisvalidatedmodel.theresultsshowedthat,thebubble'sspeedwouldincreaseforawhileduringitsrising,andeventuallyreachedasteadyvaluewithslightfluctuation.thelargerthebubble'sinitialsize,thehigherthefinalspeedofitself.pressureinsidethebubbleincreasedtothemaximumrapidlyatfirst,andthendecreasedwiththetime.atthesamemoment,thebubblewithlargersizehadhigherpressureinside.whenthebubble'sdiametertendedtoacertainvalue,thefinalaspectratioturnedtoconstant.whenthebubble'sbonumberwassmall(atorlowerthano(0)magnitude)orthemonumberwaslarge(at(o(8)magnitude),thebubblewassphericandnearlyhadnodeformation.enlargingthebonumberordecreasingthemonumber,thebubble'sshapegraduallychanged.
%K bubble
%K initialdiameter
%K risingspeed
%K pressure
%K aspectratio
%K bonumber
%K monumber
%K numericalsimulation
%U http://rlfd.paperopen.com//oa/darticle.aspx?type=view&id=201309007