一个经典的ansys热分析实例(流程序)

1、/PREP7! 英制单位； Use U. S. Customary system of units/TITLE,Steady-state thermal an alysis of pipe jun cti on /UNITS,BIN(in ches)! /SHOW,! Specify graphics driver for in teractive runET,1,90MP,DENS,1,.285MPTEMP,70,200,300,400,500! Define 20-node, 3-D thermal solid element ! Den sity = .285 恼/"人3! C

2、reate temperature tableMPDATA,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;Definecon ductivity valuesMPDATA,C,1,.113,.117,.119,.122,.125! Define specific heat values (比热)MPDATA,HF,2,426/144,405/144,352/144,275/144,221/144! Define film coefficient;除144是单位问题，上面的除12也是单元问题RI仁 1.3R

3、O1=1.5Z1=2RI2=.4RO2=.5Z2=2! Define parameters for model gen eratio n! In side radius of cyli ndrical tank! Outside radius! Len gth! In side radius of pipe! Outside pipe radius! Pipe len gthCYLIND,RI1,RO1,Z1,90 WPROTA,0,-90 working plane to pipe axis CYLIND,RI2,RO2,Z2,-90 for pipe! 90 degree cylindri

4、cal volume for tank!旋转当前工作的平面；从Y到Z旋转-90度；Rotate!角度选择在了第四象限；90 degree cylindrical volumeWPSTYL,DEFAlist the status of the work ing pla ne BOPT,NUMB,OFFnu mberi ng warning!重新安排工作平面的设置；另外 WPSTYL,STAT to； Return working plane to default setting!关掉布尔操作的数字警告信息；Turn off BooleanVOVLAP,1,2交迭体； Overlap the tw

5、o cyli nders/PNUM,VOLU,1/VIEW,-3,-1,1体编号打开； Turn volume nu mbers on/TYPE,4!精确面的显示；Precise hidden display/TITLE,Volumes used in build ing pipe/ta nk jun cti onVPLOTVDELE,3,4,1excess volumes!修剪一些体与体相关的体的因素都删掉；Trim offASEL,LOC, Z,Z1ASEL,A, LOC,Y,0CM,AREMOTE,AREAAREMOTE! Meshi ng 网格划分! Select area at re

6、mote Z edge of tank! Select area at remote Y edge of tank! 为面建立数组；Create area component called/PNUM,AREA,1/PNU M,L INE,1/TITLE,L ines show ing the portion being modeledAPLOT/NOERASE!预防抹去LPLOT/ERASE! Overlay line plot on area plotACCAT,ALLat remote tank edges!连接面和线的准备映射；Concatenate areas and linesLCC

7、AT,12,7LCCAT,10,5LESIZE,20,4LESIZE,40,6LESIZE,6,4ALLSELESIZE,.4! 4 divisi ons through pipe thick ness! 6 divisi ons along pipe len gth! 4 divisi ons through tank thick ness! Restore full set of en tities! Set default eleme nt size线的默认划分数MSHAPE,0,3D MSHKEY,1 SAVE VMESH,ALL! Choose mapped brick mesh!映

8、射网格! Save database before mesh ing! Gen erate no des and eleme nts within volumes/PNUMQEFA!重新安排数字规格/TITLE,Elements in portion being modeled EPLOTFINISH/COM, * Obta in solution */SOLUANTYPE,STATICNROPT,AUTONewt on-Raphs on opti onTUNIF,450n odesCSYS,1NSEL,S, LOC,X,RI1SF,ALL,CONV,25O/144,45Oat all no

9、desCMSEL,AREMOTENSLA,1D,ALL,TEMP,450n odes! Steady-state an alysis type!自动选择牛顿-拉普森 Program-chosen! 给结点统一的温度；Uniform starting temperature at all! 1 Cyli ndrical with Z as the axis of rotatio n! Nodes on inner tank surface!为结点指定表面载荷；对流；Convection (对流);load!选择子集组合；Select AREMOTE component! Nodes belo n

10、ging to AREMOTEWPROTA,0,-90 CSWPLA,11,1c.s at work ing pla ne NSEL,S, LOC,X,RI2 SF,ALL,CONV,-2,100 load at those no desALLSEL/PBC,TEMP,1 /PSF,CONV,2/TITLE,Bo un dary con diti ons NPLOT! Rotate work ing pla ne to pipe axis!在工作区声明本地的圆柱体系；Define local cylindrical! Nodes on inner pipe surface!这里的-2 表示材料

11、 2 ； ； Temperature-dep. convection! 边界符号的显示 Temperature b.c. symbols on! Convection symbols on箭头显示WPSTYL,DEFACSYS,0AUTOTS,ONNSUBST,50KBC,0OUTPR,NSOL,LAST solution printout SOLVE! Automatic time stepp ing! Number of substeps! Ramped load ing (default)!显示最后一次的结点约束；Optio nal comma nd forFINISH/COM, * R

12、eview results */POST1! 设定边界温度条件Temperature constraints at those/EDGE,1势，尖锐）"of an object ; /PLOPTS,INFO,ON/PLOPTS ,L EG1,OFF! Displays only the "edges （刀口 ,利刃,锋,优势,边缘,优 Edge display! Lege nd colu mn on! Lege nd header off圆柱数列的头部/WINDOW,1,SQUAREgraphics area ； Redefine window size /TITLE,Temperature con tours at pipe/ta nk junction PLNSOL,TEMP! SQUA, form largest square window within the current! Plot temperature con toursCSYS,11NSEL