prepin1inp常用参数详解

$xputTWFIN...Timetoendcalculation.DefaultisTWFIN=10.0unlessthermalcyclingisactivated(seeThermalCyclingOptions).计算完成时间ITB...Indicatorforfreesurfacesorsharpinterfaces=0,nofreesurfaceorsharpinterface=1,freesurfaceorsharpinterfaceDefaultsto0ifIDRG5;defaultsto1ifIDRG=5.是否考虑熔汤表面与空气的影响GY0.0Gravitycomponentinydirection.SeeGRAVYinnamelistMOTNfororientationvaryinggravity.Note:Forcylindricalcoordinates,useGRAVX,GRAVY.考虑重力对压铸影响，注意g的方向且为-980,单位为CGS。GRAVX0.0Initialx-directioncomponentofgravity.坐标系为极坐标时用上述参数IFENRG...Flagforinternalenergyevaluation=0,noenergysolution=2,solvetransportequationforinternalenergy(1storderadvection)=3,solveenergytransportequationusingmonotonicitypreserving,secondordermethod.Defaultsto0ifICMPRS=0andIHTC=0;defaultsto2ifICMPRS=1orIHTC>0.选择能量方程用于计算ISHRNK0Solidificationshrinkageflag.Shrinkagemodelsmayonlybeusedforone-materialproblems(NMAT=1)whenITB=1.Solidificationmustbeactivatedandsolidifieddensity(RHOFS)mustbedifferentthanliquidfluid#1density(RHOF).Shrinkagecavitationpressure(PCAV)mustalsobesetforDynamicShrinkagemodel.(PCAV,RHOFSandRHOFareinnamelistPROPS.)=0,noshrinkagemodel=1,activateDynamicShrinkagemodel=2,activateRapidShrinkagemodel.凝固收缩的定义：0表示不收缩。 ; IFVIS 0 Viscosityevaluationfla^^,熔汤层流状态=0,localviscosityevaluation(noturbulencemodel)=1,Prandtlmixinglength=2,turbulentenergymodel=3,two-equation(k-)turbulencemodel=4,RenormalizedGroupTheorymodel(RNG)IFIN1Selectsthebasisforterminationofthecalculation=1,terminatewhent>TWFIN=2,terminatewhenfillfractionexceedsFRCFINornocellsareemptyorT>TWFIN=3terminatewhensolidifiedfractionexceedsFRCFINorT>TWFIN.确定终止计算过程，2为以充填百分比为计算终止标准。FRCFIN 1.0Fillfraction(IFIN=2)orsolidfraction(IFIN=3)forterminationofthecalculation充填完成百分比，一般为100%=1DTMAX 1.e10 Maximumpermittedtime-stepsize.DTMIN 0.0001?/FONT>DELTMinimumpermittedtime-stepsize.分析时间间距最大及最小EPSADJ1.0Multiplierforthecalculatedpressureiterationconvergencecriterion(alt:EPSI).WhenEPSADJ>0,theconvergencecriterion,EPSI,issetautomaticallyateachtimestep.=0,useconstantEPSIsetbyuser=1,standardconvergencecriterion标准的收敛标准>1,coarserconvergence粗糙的收敛<1,finerconvergence.更好的收敛计算反复收敛标准压力的乘法器IEDT 1 Selectsthebasisforlongprintandspatialplotinterv-ls=1,usetime,PRTDT,PLTDT=2,usefillfraction,PRTFRC,PLTFRC=3,usesolidifiedfraction,PRTFRC,PLTFRC.选择以时间或填充百分比或凝固百分比为分析结果输出基准。PLTFRC 0.1Intervalforspatialplotsbasedonfillfraction(IEDT=2)orsolidfraction(IEDT=3).空间间隔结果输出以填充百分比或凝固百分比。IHTC 0Fluid/obstacleheattransferflag=0,noheattransfer=1,evaluateheattransfer=2,evaluateheattransferandsolvetheobstacleconductionequation.金属液与模具之间的传热选择。$propsRHOF熔汤密度RHOFSRHOF熔汤凝固后的密度GAMMA1.0Densityoffluid#1.Densityofsolidifiedfluid#1.气泡常数CV1CV2流体的比热CVS1Exponentinvoidregionequationofstate,(PV厂=constant.Negativevalueindicatesconstantpressure.负值表示恒定压力。(表示在无效区域的状态方程)RHOF熔汤密度RHOFSRHOF熔汤凝固后的密度GAMMA1.0Densityoffluid#1.Densityofsolidifiedfluid#1.气泡常数CV1CV2流体的比热CVS1Exponentinvoidregionequationofstate,(PV厂=constant.Negativevalueindicatesconstantpressure.负值表示恒定压力。(表示在无效区域的状态方程)4.187e7-1.0CV1凝固后流体的比热。POFL10.0SpecificSpecificheatheatof

ofSpecificIfCLHTandCLTPnotused.heatoffluid#1.fluid#2.Defaultsto7.178e6solidifiedfluid#1.arraysarespecified,CVS1isUniformpowersourceperunitmassforfluid#1.Note:POFL1isignoredforIHONLY=2(namelistXPUT).Uniformpowersourceperunitmassforfluid#2.Note:POFL2isignoredforIHONLY=2(namelistXPUT).给流体加热的功率是均一的。THC1RMK?/FONT>MU1?/FONT>CV1Thermalconductivityoffluid#1.(RMKisinnamelistXPUT.)POFL20.0流体的热传导率Thermalconductivityofsolidifiedfluid#1.THCS1THC1Thermalconductivityofsolidifiedfluid#1.TSTAR...Referencetemperaturefortemperaturedependentfluidproperties.IfTS1>0,TSTAR=TL1;otherwise,TSTARdefaultsto373.15.流体最初的参考温度。CSTAR0.0Referencesoluteconcentrationforconcentration-dependentdensity.CSTARalsocorrespondstoTS1andTL1onthephasediagram.参考溶质的浓度由密度决定CLHT10.0Latentheatoffusioninfluid#1(alt:CLHT).熔汤1熔化潜热。TS10.0Solidustemperatureoffluid#1固相线(液体凝固的临界温度)

TL10.0Liquidustemperatureoffluid#1.(UsedonlywhenTS1>0.)液相线(固体熔化温度)DRATIO0.0Ratioofsolutediffusioncoefficientsinsolidandliquidphases.在固/液相，溶质扩散系数的比率。TNIYAMTS1Temperatureatwhichsolidificationvariablesarecalculated(i.e.,solidificationtime,temperaturegradient,etc.).TSDRG 1.0TSDRG 1.0缓慢凝固的系数。FSCR 1.0Coefficientofsolidificationdrag.Criticalsolidfractionabovewhichmetalhasnofluidity.在金属没有流动性上面临界的固态分数FSCO0.0Fractionofsolidatcoherencypoint.WhenthevalueofthesolidfractionisbelowFSCO,thenthesolidifiedmaterialisassumedtoincreasetheapparentviscosity.WhensolidfractionisaboveFSCO,thesolidifiedmaterialformsacoherentstructurewhichisaccountedforbyusingadragforce.FSCOMUC20.0Coefficientinmodel.MUC30.0Coefficientinmodel.MUC20.0Coefficientinmodel.MUC30.0Coefficientinmodel.MUTMP10.0Coefficientinstrainrate-dependentmodel.(MUC1>0.0activatesmodel.)Note:SeetheTheoryManual(Section3)fortheuseofthesevariablesandtheshearviscosityequation.strainrate-dependentdependentviscosityviscositytemperaturedependentmodel.MUTMP1>0.0activatesmodel.viscosityMU1MUIDynamicviscosityoffluid#1.流体1的动态黏度。MUC000.0Coefficientinstrainrate-dependentviscositymodel.相依存的张力比率粘度模型1的系数。MUC01.0Coefficientinstrainrate-dependentviscositymodel.MUC10.0Coefficientinstrainrate-dependentviscosity在临界点的固态百分数。当固态百分数小于临界值时，凝固的物质粘度明显增加

MUTMP20.0MUTMP31.0Note:SeetheTheoryManual(SectionMUTMP20.0MUTMP31.0Note:SeetheTheoryManual(Section3)fortheuseofthesevariablesandthetemperaturedependentviscosityequation.Coefficientintemperaturedependentviscositymodel.Coefficientintemperaturedependentviscositymodel.上述参数当选择了流体后自动产生，(如铝合金、镁铝合金等)CANGLE-90?/FONT>Staticcontactangle(indegrees)forfluid#1walladhesion.0<CANGLE<90indicateswettingsituation90<CANGLE<180indicatesnon-wettingsituationCANGLE<0indicatesnowalladhesion.Eutecticconcentration(alt:TEUT).IfTEUTisset,thenCEUTisdefinedfromthephasediagramaccordingtoCEUT=CSTAREutecticconcentration(alt:TEUT).IfTEUTisset,thenCEUTisdefinedfromthephasediagramaccordingtoCEUT=CSTAR?/FONT>(TMELT-TEUT)/(TMELT-TL1);otherwise,defaultsto0.0.共晶的浓度。TEUT共晶的浓度。TEUTEutectictemperature(alt:CEUT).IfCEUTisset,thenTEUTdefaultstoTEUT=TMELT-(TMELT-TL1?)/FONT>CEUT/CSTAR;otherwise,defaultsto0.0.共晶温度。Solutalexpansioncoefficient.CEXF1 0.0Solutalexpansioncoefficient.溶质膨胀系数。NSC0NSC0数量种类的数目。IDFCT0Numberofscalarspecies.Indexofscalarspeciesusedtorecorddefects.Anon-zerovalueactivatesthedefecttrackingoption.数量种类索引经常记录缺陷。一个非零值激活缺陷跟踪选项。DFTSRF1.0Coefficientofproportionalityforfreesurface-generateddefects(defectscreatedperunittimeperunitarea).流体与空气表面接触产生缺陷的比例系数。

$$bcdataWTWB1BoundaryconditiontypeatmaximumzWTWB(seeWB).在网孔的最大z边(顶端)的边界情况类型。1Boundaryconditiontypeatminimumzside(bottom)of

mesh 在网孔的最小z边(底端)的边界情况类型。=symmetryplane 对称平面=rigidwall 硬的墙壁=continuativeboundary边界条件=periodicboundaries(mustbeappliedatoppositesidesofmesh)周期的边界，一定在相反边被应用=specifiedpressureboundary指定压力边界=specifiedvelocityboundary指定速度边界=boundaryvaluesobtainedfrompreviouscalculationusinggridoverlay(GO)procedure使用网格重叠程序，从先前计算获得边界值。=outflowboundarythatminimizeswavereflections.8．将波浪反射减到最小后的溢出边界。WF 1Boundaryconditiontypeatminimumyside(front)ofmesh(seeWB).在网孔的最小y边(前面)的边界情况类型。WL 1Boundaryconditiontypeatminimumxside(left)ofmesh(seeWB).在网孔的最小x边(左面)的边界情况类型。WR 1Boundaryconditiontypeatmaximumxside(right)ofmesh(seeWB).在网孔的最大x边(右面)的边界情况类型。WBK 1Boundaryconditiontypeatmaximumyside(back)ofmesh(seeWB).在网孔的最大y边(后面)的边界情况类型。WBC(n) 0.0Zvelocityatmeshboundaryn(alt:WBCT).在网孔边界n的z方向速度。TBC(n) TBCDTemperatureatmeshboundaryn(alt:TBCT).Valuesmustbepositive.网格边界n的温度。必须是正值。$meshNXCELT1Totalnumberofrealcellsinxdirection在x方向真正网格总数。PX(n) ...n-thlocationinxdirectionforameshplane.IfNXCELT=1,PX(2)defaultstoPX(1)+1.0;otherwisedefaultsto0.0.PY(n) ...n-thlocationinydirectionforameshplane.PZ(n) ...n-thlocationinzdirectionforameshplane.IfNZCELT=1,PZ(2)defaultstoPZ(1)+1.0;otherwisedefaultsto0.0.Px(n)表示产生网格的区域点，通过多个点可以在不同区域产生不同的网格密度。这样在重要区域可以加密网格，不重要的区域可以稀疏些，减少网格数量，增加分析速度。$obsAVRCK-5.1AVRCK>0,meshcellswitharea/volumeratiosexceedingthisvaluearelistedinpreprocessoroutput.有超出数值的网格单元在预处理输出时被列出。AVRCK<0,anegativevalueflagspreprocessortoadjustcellvolumefractionssoratiodoesnotexceedmagnitudeofAVRCK. 负值标志调整单元体积百分数的预处理，使得网格纵横比不超过AVRCK的大小。(Thisoptionallowslargerfluidconvectivetimestepsforcertainsituations.)这个参数在某种特定情形下，允许更大的流体对流时间步距。(压力计算调整量？)必须为负值！IAVRCK1FAVORvolumeadjustmentforstabilitywithlargertime-steplimit(seeAVRCK)=0,noadjustment=1,maximumadjustmentformaximumtime-steplimit=2,smalleradjustmentforimprovedtime-steplimit.支持体积调整为较大时间步距稳定限制。NOBS0Numberofobstacles.模壁标号IOB(n) ...Associatesregionnwithaparticularobstacle.DefaultisIOB(n)=n.使区域n与精确的模壁相关联。(Usage:IOB(n)=m;regionnispartofobstaclem.)IOH(n) 1Regiontype区域类型=0,hole孔洞=1,obstacle模壁=-1,complementregion(CADdataandFAVORdatafileonly).补缩区域，(仅指CAD或指定数据文件)IGEN(n) 0Obstacleregiongenerationflag,indicatessourceofgeometricdataforregionn=0,FLOW-3D=0,FLOW-3D?/=1,FAVORfractionsinexternaldatafile=2,I-DEASCADdatafile=3,stereolithography(STL)CADdatafile=4,ANSYStetrahedralorsurfacetrianglegeometricdatafiles=5,topographicfile.模壁区域产生标志，为区域n指出几何数据来源。FSTL(n)