Thermo-Calc培训课件 DICTRA课件

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1、DICTRAGeometriesInfinitelywideplateofacertainthickness.Infinitelylongcylinderofacertainradius.Spherewithacertainradius.Thermo-CalcSoftwarewww.thermocalc.comENTER_GEOMETRICAL_EXPONENTCommandthatdeterminesthegeometryofthesystem.Theprogramhandlesproblemsthatcanbereducedto1-dime

2、nsionalgeometries.Defaultvalueiszero,i.e.planargeometry.ExponentGeometry0Planargeometry.Thiscorrespondstoaninfinitelywideplateofacertainthickness.1Cylindricalgeometry.Thiscorrespondstoaninfinitelylongcylinderofacertainradius.2Sphericalgeometry.Aspherewithacertainradius.Therm

3、o-CalcSoftwarewww.thermocalc.comSET_FIRST_INTERFACEThiscommandsetsthecoordinateofthefirstinterfaceofthecell.Defaultvalueiszero.-COORDINATEFORFIRSTINTERFACEThecoordinatetowhichthefirstinterfaceistobeset.e.g.Infinitelylongtubeofacertainradius.Thermo-CalcSoftwarewww.thermocalc.

4、comRegionA”box”withanarbitrarynameThermo-CalcSoftwarewww.thermocalc.comGridDistributionofnodepointsfornumericalcalculationsThermo-CalcSoftwarewww.thermocalc.comConcentrationProfileCkzConcentration,CofanelementaskafunctionofdistancezThermo-CalcSoftwarewww.thermocalc.comGlobal

5、conditionsT=1273KP=1atmConditionsvalidforentiresystem,TandPThermo-CalcSoftwarewww.thermocalc.comBoundaryConditionsa=1(carburization)cConditionsthatapplytoregionboundaries(couldbefunctionsoftimeandtemperature)Thermo-CalcSoftwarewww.thermocalc.comLineargridEquidistantdistribut

6、ionofnodepoints.Thermo-CalcSoftwarewww.thermocalc.comGeometricalGridXX*RX*R2X*R3R>1R<1NodepointsrepresentsgeometricseriesThermo-CalcSoftwarewww.thermocalc.comDoubleGeometricalGridR<1R>1Thermo-CalcSoftwarewww.thermocalc.comBoundaryconditionsinDICTRA•BoundaryConditionscanbespe

7、cifiedasfunctionsoftime,temperatureandpressure.•Differentfunctionsmaybeusedindifferenttimeintervals.Applicationexample:Exampleofconditionsare:0.8Carburizationwithsurfacereaction–SatevariableexpressionsC0.6tJ=f(asurf-agas)enCCCC–Fluxconditionsrce0.4s-p4–Mixedconditionsas32M0.

8、21001020DistanceThermo-CalcSoftwarewww.thermocalc.comConditiontypesFixfluxv