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1、Seediscussions,stats,andauthorprofilesforthispublicationat:https://www.researchgate.net/publication/286666586Newtwo-scalehydrodynamicmodelbasedonenergybalanceinbubblecolumnArticle·June2014DOI:10.3969/j.issn.0438-1157.2014.06.009CITATIONREADS1706authors,inc
2、luding:XiaopingGuanLuyiWangChineseAcademyofSciencesTheUniversityofWarwick19PUBLICATIONS36CITATIONS818PUBLICATIONS8,226CITATIONSSEEPROFILESEEPROFILEZhaodongLiYabnchaoZhaoChinaIronandSteelResearchInstituteUniversityofNottingham,NingboCampus451PUBLICATIONS1,6
3、70CITATIONS64PUBLICATIONS71CITATIONSSEEPROFILESEEPROFILESomeoftheauthorsofthispublicationarealsoworkingontheserelatedprojects:vitiligoViewprojectGiantMagnetoimpedanceeffectStudiesinCompositeMagneticMaterialsViewprojectAllcontentfollowingthispagewasuploaded
4、byYouweiChengon22February2016.Theuserhasrequestedenhancementofthedownloadedfile.第65卷第6期化工学报Vol.65No.62014年6月CIESCJournalJune2014基于能量守恒的鼓泡塔双尺度流体力学模型管小平,王丽军,李兆奇,赵远方,成有为,李希(浙江大学化学工程与生物工程学系,浙江杭州310027)摘要:提出了同时描述鼓泡塔宏观流动及气泡尾涡小尺度湍动的双尺度流体力学模型,其中大尺度剪切流通过经典k-ε模型描述,而
5、小尺度尾涡湍动则由“尾涡温度”传输方程确定。通过在运动方程添加“尾涡压力”源项,构建大小双尺度流体运动的相互作用,解释鼓泡塔内含率非均匀分布的机制。模型将鼓泡塔内的能量耗散分解3种作用机制:大尺度剪切流引起湍动耗散;小尺度尾涡湍动耗散;尾涡与壁面作用的能量耗散,较好地解决了现有鼓泡塔模型能量不守恒问题。模型计算稳定性高,模拟结果与实验结果吻合良好。关键词:流体力学;模型;双尺度;鼓泡塔;能量守恒DOI:10.3969/j.issn.0438-1157.2014.06.009中图分类号:TQ021.1文献标志
6、码:A文章编号:0438—1157(2014)06—2013—08Newtwo-scalehydrodynamicmodelbasedonenergybalanceinbubblecolumnGUANXiaoping,WANGLijun,LIZhaoqi,ZHAOYuanfang,CHENGYouwei,LIXi(DepartmentofChemicalandBiologicalEngineering,ZhejiangUniversity,Hangzhou310027,Zhejiang,China)Abst
7、ract:Anewtwo-scalehydrodynamicmodelwasproposedtodescribelarge-scalemotionandsmall-scalebubblewaketurbulence.Thelarge-scaleshearinducedturbulencewasresolvedbyclassicalk-εturbulencemodel,whilethesmall-scalebubblewaketurbulencewasquantitivelydescribedbywakete
8、mperaturetransportequation.Awakepressuregradientsourcetermwasaddedtothemotionequationtoreflectthemutualinfluencebetweensmallscaleturbulenceandlargescalefluidmotionandtoexplainthemechanismofholdupnon-uniformdi