ansys热分析实例.docx

/PREP7
/TITLE,Steady-statethermalanalysisofpipejunction
/UNITS,BIN!英制单位；UseU.S.Customarysystemofunits(inches)
!/SHOW,!Specifygraphicsdriverforinteractiverun

ET,1,90!Define20-node,3-Dthermalsolidelement
MP,DENS,1,.285!Density=.285lbf/in^3
MPTEMP,,70,200,300,400,500!Createtemperaturetable
MPDATA,KXX,1,,8.35/12,8.90/12,9.35/12,9.80/12,10.23/12
!指定与温度相对应的数据材料属性；导热系数；Defineconductivityvalues
MPDATA,C,1,,.113,.117,.119,.122,.125
!Definespecificheatvalues（比热）

MPDATA,HF,2,,426/144,405/144,352/144,275/144,221/144
!Definefilmcoefficient;除144是单位问题，上面的除12也是单元问题

!Defineparametersformodelgeneration
RI1=1.3!Insideradiusofcylindricaltank
RO1=1.5!Outsideradius
Z1=2!Length
RI2=.4!Insideradiusofpipe
RO2=.5!Outsidepiperadius
Z2=2!Pipelength

CYLIND,RI1,RO1,,Z1,,90!90degreecylindricalvolumefortank
WPROTA,0,-90!旋转当前工作的平面；从Y到Z旋转-90度；；Rotateworkingplanetopipeaxis
CYLIND,RI2,RO2,,Z2,-90!角度选择在了第四象限；90degreecylindricalvolumeforpipe

WPSTYL,DEFA!重新安排工作平面的设置；另外WPSTYL,STATtolistthestatusoftheworkingplane；；Returnworkingplanetodefaultsetting
BOPT,NUMB,OFF!关掉布尔操作的数字警告信息；TurnoffBooleannumberingwarning

VOVLAP,1,2!交迭体；Overlapthetwocylinders

/PNUM,VOLU,1!体编号打开；Turnvolumenumberson
/VIEW,,-3,-1,1
/TYPE,,4!精确面的显示；Precisehiddendisplay
/TITLE,Volumesusedinbuildingpipe/tankjunction
VPLOT
VDELE,3,4,,1!修剪一些体与体相关的体的因素都删掉；Trimoffexcessvolumes

!Meshing网格划分
ASEL,,LOC,Z,Z1!SelectareaatremoteZedgeoftank
ASEL,A,LOC,Y,0!SelectareaatremoteYedgeoftank
CM,AREMOTE,AREA!为面建立数组；CreateareacomponentcalledAREMOTE

/PNUM,AREA,1
/PNUM,LINE,1
/TITLE,Linesshowingtheportionbeingmodeled
APLOT
/NOERASE!预防抹去
LPLOT!Overlaylineplotonareaplot
/ERASE

ACCAT,ALL!连接面和线的准备映射；Concatenateareasandlinesatremotetankedges
LCCAT,12,7
LCCAT,10,5
LESIZE,20,,,4!4divisionsthroughpipethickness
LESIZE,40,,,6!6divisionsalongpipelength
LESIZE,6,,,4!4divisionsthroughtankthickness
ALLSEL!Restorefullsetofentities
ESIZE,.4!Setdefaultelementsize线的默认划分数

MSHAPE,0,3D!Choosemappedbrickmesh
MSHKEY,1!映射网格
SAVE!Savedatabasebeforemeshing
VMESH,ALL!Generatenodesa