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1、InternationalJournalofMechanicsResearch力学研究,2017,6(1),46-55PublishedOnlineMarch2017inHans.http://www.hanspub.org/journal/ijmhttps://doi.org/10.12677/ijm.2017.61006RisingBehaviorofSingleBubblesinNon-NewtonianFluidXiaofeiXu1,JuZhang1,2,FengxiaLiu1,WeiWei1,ZhijunLiu1*1R&DInstit
2、uteofFluidandPowderEngineering,DalianUniversityofTechnology,DalianLiaoning2ChinaNuclearPowerEngineeringCo.,Ltd,BeijingthththReceived:Mar.10,2017;accepted:Mar.24,2017;published:Mar.30,2017AbstractThehighspeedphotographyanddigitalimageprocessingtechniquehavebeenemployedtomeasu
3、retherisingbehaviorofthesinglebubbleincarboxymethylcellulose(CMC)solutiontoob-tainthetrajectoryandtherisingvelocityofthebubble.Meanwhile,basedonthevolumeoffluid(VOF)model,numericalsimulationhasbeenconductedtostudytherisingprocessofthesinglebubbleinCMCsolution,andtheinfluence
4、oftherisingbubbleonthevelocityfieldofthesur-roundingliquidphasehasbeeninvestigated.Accordingtotheexperimentalresults,therheologi-calpropertyhasgreatinfluenceontherisingbehaviorofsinglebubbleinCMCsolution.ItisshownthattherisingvelocityofthebubbleintheCMCsolutionswithdifferent
5、weightpercentagehasdifferentvariationpatterns.ThevalueofthesteadyrisingvelocitydecreaseswiththeincreaseoftheweightpercentageoftheCMCsolution.ThestrengthoftheoscillationgrowsweakerwiththeincreaseoftheweightpercentageofCMCsolutionandeventuallytendstoascendalongastraightline.Th
6、esimulationresultswellpredictthebubble’srisingprocessinCMCsolutionwithdifferentweightpercentage.Furthermore,thesimulatedresultsshowthatthebubblegeneratesalternatevortexinCMCsolutionwithlowerweightpercentageasbubbleswingsup,whileintheCMCsolutionwithhigherweightpercentage,thef
7、lowfieldofliquidphasedistributessymmetri-cally.TheinfluencedomainoftherisingbubbleonthewakefielddecreaseswiththeincreaseoftheweightpercentageoftheCMCsolution.KeywordsNon-NewtonianFluid,SingleBubble,BubbleBehavior,VOFModel非牛顿流体中单气泡运动行为研究11,2111*许晓飞，张菊，刘凤霞，魏炜，刘志军1大连理工大学流体与粉体工程
8、研究设计所，辽宁大连2中国核电工程有限公司，北京文章引用:许晓飞,张菊,刘凤霞,魏炜,刘志军.非牛顿流体中单气泡运动行为研究[J].力学研究,2017
