后来,我又检查了一下模型,发现一个很奇怪的问题!
我作两个相接的面,由于尺寸很小,当放大看时发现中间部分两个面之间有间隙,但是它们却好像共用一条线,划分网格后好像间隙就不存在了,很奇怪,这对分析有影响吗?
下面是命令流:
/units,si
/PREP7
ET,1,FLUID141
!建模
K,1,-0.18,0,0
K,2,0,0.05E-3,0
K,3,0,0.085E-3,0
K,4,-0.18,0.085E-3,0
K,5,0,-3E-3,0
K,6,-0.18,-3E-3,0
k,7,0.18,0.085E-3,0
k,8,0.18,0,0
k,9,0.18,-3e-3,0
a,1,2,8,7,3,4
a,1,2,8,9,5,6
!划分网格
LSEL,S,,,1,2
lsel,a,,,4,5
lsel,a,,,8,9
LESIZE,ALL,,,50,
ALLSEL
LSEL,S,,,3,6,3
LESIZE,ALL,,,2
ALLSEL
LSEL,s,,,7,10,3
LESIZE,ALL,,,3
ALLSEL
lccat,1,2
lccat,4,5
MAT,1
mshkey,0
AMESH,1
lccat,8,9
mshkey,0
MAT,2
AMESH,2
lccat,1,2
lccat,4,5
MAT,1
mshkey,0
AMESH,1
lccat,8,9
mshkey,0
MAT,2
AMESH,2
mp,dens,2,7900
mp,kxx,2,38
mp,c,2,460.5
SAVE
FINISH
/SOLU
!施加约束
....... !省略一些条件
lsel,s,,,8,9 !对流换热系数
nsll,r,1
sf,all,conv,100,20
ALLSEL,ALL
finish
to littlewetboy: 我把对流系数和热流密度施加在边界节点上的,是不是这两个边界条件施加有一定的条件限制啊!还是由于上述原因引起的!
放大后的图形: |