我做了一个,接触热分析的例子,两个圆柱的热传导分析。由于对称直接采用平面轴对称建模
接触换热系数随意定了一个5000.
但是发现彼此之间不能发生热传导,不知道原因在那里??
请高手帮忙看看,命令流如下:
KEYW,PR_THERM,1
/PREP7
ET,1,PLANE55
KEYOPT,1,3,1
MP,KXX,1,121
MP,C,1,900
MP,DENS,1,2800
MP,KXX,2,0.75
MP,C,2,1200
MP,DENS,2,2064
RECTNG,0,0.025,0,0.1,
RECTNG,0,0.025,0.1,0.118,
/PNUM,LINE,1
/PNUM,AREA,1
/REPLOT
LESIZE,2,,,25,0.5
LESIZE,4,,,25,2
LESIZE,3,,,12
LESIZE,5,,,12
LESIZE,6,,,10,2
LESIZE,8,,,10,0.5
MSHAPE,0,2D
MSHKEY,1
TYPE,1
MAT,1
AMESH,1
TYPE,1
MAT,2
AMESH,2
LSEL,S,LINE,,5
NSLL,s,1
CM,con1,NODE
LSEL,S,LINE,,3
NSLL,s,1
CM,con2,NODE
R,3
real,3
ET,2,TARGE169
ET,3,conta171
KEYOPT,3,1,1
KEYOPT,3,12,5
r,3,
RMORE,,,,,,
RMORE,,50000
TYPE,3
MAT,2
NSEL,S,,,CON1
ESLN,S,0
ESURF
TYPE,2
MAT,1
NSEL,S,,,CON2
ESLN,S,0
ESURF
/SOL
ANTYPE,trans
TRNOPT,FULL
allsel,all
aSEL,s,,,1
NSLa,R,1
D,ALL,TEMP,16
allsel,all
aSEL,s,,,2
NSLa,R,1
D,ALL,TEMP,600
ALLSEL,ALL
TIMIT,ON
TIME,40
DELTIM,0.2, , ,1
AUTOTS,ON
OUTRES,,ALL
ALLSEL,ALL
SOLVE |