侧伸搅拌厌氧反应器流场的数值模拟王卫京

34　　　　　　　　★★王卫京1,陈淑花1.2,陈　理1,左秀锦1(1.大连大学环境与化学工程学院,辽宁大连116622;2.大连理工大学流体与粉体研究所,辽宁大连116012)　:侧伸搅拌厌氧反应器是一常用的厌氧反应器。对侧伸搅拌厌氧反应器进行数值模拟。模拟结果表明,流体在反应器内形成循环流动,反应器内的湍流特性分布并不均匀。:搅拌厌氧反应器数值模拟:X703　　　:A　　　:1008-2395(2010)06-0034-02:2010-04-29:辽宁省教育厅科学技术研究项目资助(2009A068):王卫京(1971-),男,副教授,Email:[e-mail]　　1　。,,,。,,。,,,。,。RobertN.Fluent,,[1-2]。,[3]UASB。[4]UASB,。,,。,。2　Fluent,,k-ε。:divρu=0:div(ρuu)=div(μeffgardu-gradρμeff=μt+μt　　μt=pCμK2εkε:div(ρuk)=div(μeffσkgradk+G-ρεdiv(ρuε)=div(μeffσkgradε)+(C1G-C2ρε)εkG=12μt(uixj+ujxi)ujxiLaunder[5]:Cμ=0.09,C1=1.44,C2=1.92,σk=1.0,σε=1.3。3　300rpm。6,8,,,0.6。,1.5,1。45°。,1。图1　厌氧反应器网格划分35　　　　　4　。2,3。,,,,。,,。图2　厌氧反应器流动轨迹图图3　厌氧反应器速度矢量图45--1A-A。,,,,。,。图4　湍动动能k等值线图　　图5　耗散率ε等值线图　　5　。,,。kε,,,。C1,C2Cμk-εσk,σεkεGkgm-1s-3ρ,kgm-3k,m2s-2μ,Pasp,Paε,m2s-3u,ms-1efft:[1]MERONEYRN,COLORADOPE.CFDsimulationofmechanicaldrafttubemixinginanaerobicdigestertanks[J].waterresearch,2009(43):1040-1050.[2]TERASHIMAM,GOELR,KOMATSUK,etal.CFDsimulationofmixinginanaerobicdigesters[J].BioresourceTechnology,2009(100):2228-2233.[3]叶群峰.升流式厌氧污泥床(UASB)数值模拟及流态分析[D].郑州大学,2002.[4]王卫京,左秀锦,朱波.UASB厌氧反应器内流场数值模拟[J].大连大学学报,2007(28):8-10,2007.[5]LAUNDERBE.SPALDINGDB.ComputMethApplMechEngng[M],1974.NumericalSimulationontheFlowFieldinSide-enteringAgitatedAnaerobicReactorWANGWei-jing1,CHENShu-hua1,2,CHENLi1,ZUOXiu-jin1(1.CollegeofEnvironmentalandChemicalEngineering,DalianUniversity,Dalian116622,China;2.RDInstituteofFluidandPowderEngineering,DalianUniversityofTechnology,116012,China)Abstract:Side-enteringagitatedanaerobicreactorisananaerobicreactorwhichiswidelyused.Numericalsimulationontheflowfieldinthereactorisstudiedinthispaper.Resultsofthesimulationrevealedthatthethatthefluidcirculatedinthereactorandturbulencepropertieswerenotnotdistributeduniformly.Keywords:agitated,anaerobicreactor,numericalsimulation