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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期化工學(xué)報(bào)Vol.65No.62014年6月CIESCJournalJune2014基于能量守恒的鼓泡塔雙尺度流體力學(xué)模型管小平,王麗軍,李兆奇,趙遠(yuǎn)方,成有為,李希(浙江大學(xué)化學(xué)工程與生物工程學(xué)系,浙江杭州310027)摘要:提出了同時(shí)描述鼓泡塔宏觀流動(dòng)及氣泡尾渦小尺度湍動(dòng)的雙尺度流體力學(xué)模型,其中大尺度剪切流通過經(jīng)典k-ε模型描述,而
5、小尺度尾渦湍動(dòng)則由“尾渦溫度”傳輸方程確定。通過在運(yùn)動(dòng)方程添加“尾渦壓力”源項(xiàng),構(gòu)建大小雙尺度流體運(yùn)動(dòng)的相互作用,解釋鼓泡塔內(nèi)含率非均勻分布的機(jī)制。模型將鼓泡塔內(nèi)的能量耗散分解3種作用機(jī)制:大尺度剪切流引起湍動(dòng)耗散;小尺度尾渦湍動(dòng)耗散;尾渦與壁面作用的能量耗散,較好地解決了現(xiàn)有鼓泡塔模型能量不守恒問題。模型計(jì)算穩(wěn)定性高,模擬結(jié)果與實(shí)驗(yàn)結(jié)果吻合良好。關(guān)鍵詞:流體力學(xué);模型;雙尺度;鼓泡塔;能量守恒DOI:10.3969/j.issn.0438-1157.2014.06.009中圖分類號(hào):TQ021.1文獻(xiàn)標(biāo)志
6、碼:A文章編號(hào):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