滑阀节流棱边圆角对流量特性影响的三维模型仿真

滑阀节流棱边圆角对流量特性影响的三维模型仿真

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时间:2019-02-01

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1、机床与液压Jun.2013HydromechatronicsEngineeringVo1.41No.12DOI:10.3969/j.issn.1001—3881.2013.12.002NumericalSimulationStudyontheInfluenceofArris-edgeFilletofSpoolValveonFlowCharacteristicsWANGDongwei,YEZhengmaoSchoolofMechatronicsEngineering,HarbinInstituteofTechnolog

2、y,Harbin150001,ChinaAbstract:Theflowcharacteristicofthespoolvalveafectstheperformanceoftheservovalve.U·singFluent,thispaperdiscussesthefollowingfourcases:theidealspoolvalve,thespoolvalveswitharris-edgefilletsof5,8and10tam.Theefectsofdiferentfilets0nthevalve’sfl

3、owcharac-teristicsarediscussedandacorrectionformulafortheflowcoeficientofidealspoolvalveispro-posedbypolynomialapproximationofthesimulationresults.Keywords:flowcharacteristics,Fluent,theworkingarris-edgefilletTheresearchontheflowcharacteristicsofspool1.Introduc

4、tionvalveisquitedifficultforthefollowingtworeasons:①Itisdifficulttodetectaopeningofonlyafewmi-Athree—stageelectro—hydraulicselwovalveisthecronsintheexperiment.(Thetheoreticalformulakeycomponentofhighpowerelectro—hydraulicservoisderivedfromthesimplifiedmodelandt

5、husthefor.controlsystems.Becauseofitsoutstandingfeaturesmulaisnoteffectiveincertaincircumstancesl5f.suchaslargecapacity,high-frequencyresponse,Numericalsimulationcanovercometheseshortcom.highresolutionandhighreliability,etc,three-stageings,anditisrelativelyeasy

6、toapply,sothispaperelectro.hydraulicservovalveshavebeenwidelyusedstudiestheeffectoftheworkingarris—edgefilletofinmanyhigh-performanceapparatusincluding6一DOFvalvespoolontheflowcharacteristicsusingFluent.motionsimulators.vibratingtablesandloadsimula-tors,etc『1—2]

7、.Generally,themainvalveofa2.Theoreticalformulaoftheslidevalvethree—stageelectro.hydraulicservovalveisaspoolflowcharacteristicsvalve.anditsfluidflowrateiscontrolledbychan.gingtheflowareaofthevalveportbytherelativemo—Theidealmodelofthespoolvalveisshownintionofthe

8、valvespoolandsleeve『3].Fig.1,itshowsthat,asidefromthetwoleftandfightTheflowcharacteristicofthespoolvalveaffectscontrolchannels,thevalvehasfourchannelscon-theperformanceofthe

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