资源描述：
《改进气液旋流器排气管结构的实验及cfd模拟研究》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、第25卷第2期高校化学工程学报No.2Vol.252011年4月JournalofChemicalEngineeringofChineseUniversitiesApr.2011文章编号：1003-9015(2011)02-0205-07改进气液旋流器排气管结构的实验及CFD模拟研究1,222112金向红,金有海,王建军,汪秀敏,张金亮,孙治谦(1.宁波工程学院化工学院,浙江宁波315016;2.中国石油大学(华东)多相流实验室,山东东营257061)摘要：采用RSM模型和DPM模型对轴流式气液旋流分离器内的气相流场和液
2、滴运动轨迹进行了数值计算，发现在排气管下方有比较强的短路流，而液滴随短路流逃逸是降低旋流器分离性能的重要原因。设计了四种新型的排气管结构，并对他们进行了数值计算，计算结果发现短路流和压力降受排气管结构的影响很大，其中结构4的排气管结构产生的短路流强度最弱，压力降较小；是一种理想的结构形式。在数值计算的基础上，对四种结构进行了分离性能实验研究，发现实验结果与数值计算预测完全一致，验证了数值计算的可靠性，同时也开发出了一种新型结构。关键词：气液分离；数值模拟；短路流；排气管；分离效率；压降损失中图分类号：TQ028.24；T
3、Q051.84；TQ019文献标识码：ANumericalandExperimentalStudyontheImprovedInletGeometricConstructionofGasExhaustPipeinGas-LiquidCycloneSeparator1,22211JINXiang-hong,JINYou-hai,WANGJian-jun,WANGXiu-min,ZHANGJin-liang,SUN2Zhi-qian(1.CollegeofChemicalEngineering,NingboUniversit
4、yofTechnology,Ningbo315016,China;2.InstituteofMultiphaseFlow,UniversityofPetroleum(EastChina),Dongying257061,China)Abstract:UsingRSMandDPMmodels,thegasflowfieldanddropletsmovementtrajectoryinaxialflowgas-liquidcycloneseparatorwerenumericallycalculated.Theresultss
5、howthat,thereexistsstrongshortcircuitflowbeneaththegasexhaustpipeinthecyclone,andthedropletsescapeviatheshortcircuitflowisthemostimportantcauseforthereducingseparatingcapabilityofthecyclone.Inordertogetimprovement,fourgasexhaustpipeswithdifferentinletstructureswe
6、redesignedandnumericallycalculated.Theseparatingcapabilityexperimentsofthecycloneswithabovefourstructuresseparatelywerecarriedoutrespectively.Resultsshowthattheaboveshortcircuitflowandpressuredroparegreatlyaffectedbytheinletstructureofthegasexhaustpipe,andthe4ths
7、tructuredesignedisanidealconfiguration,fortheshortcircuitflowbeneathitisweakestanditspressuredropisleast.Itwasfoundthatthenumericalcalculationresultsagreewellwiththeexperimentalresults,whichvalidatesthereliabilityofthenumericalcalculation;andinthemeantime,anoveli
8、nletstructureforgasexhaustpipeingas-liquidcycloneseparatorwasdeveloped.Keywords:gas-liquidseparation;CFD;short-cutflow;gasexhaustpipe;separatingefficiency;pres
