程序:
模型结构是这样的,上面是流体部分,底部有五个部分,下面是三个良热导体,彼此中间有两个热导率很低的介质。在中间部分底部加热源,看流体流动下的温度分布。
finish
/clear
/filename,si_co06
/title,steady-state thermal analysis
fl_l=0.0022 !流体长度
fl_w=0.0008 !流体宽度
se_w=-0.0003 !传感器宽度
se_l=0.0006 !测温部分长度
r_l=0.00015 !绝热膜长度
h_l=0.0007 !加热部分长度
/prep7
/unit,si
et,1,fluid141
rect,0,fl_l,0,fl_w
rect,0,se_l,0,se_w
rect,se_l,se_l+r_l,0,se_w
rect,se_l+r_l,se_l+r_l+h_l,0,se_w
rect,se_l+r_l+h_l,se_l+r_l+h_l+r_l,0,se_w
rect,se_l+r_l+h_l+r_l,se_l+r_l+h_l+r_l+se_l,0,se_w
aglue,all
nummrg,all
numcmp,all
lsel,s,,,1,3,2
lesize,all,,,80,15
lsel,s,,,5,9,1
lsel,a,,,18
lesize,all,,,18
lsel,s,,,2
lesize,all,,,132
lsel,s,,,4,10,6
lsel,a,,,17,19,2
lesize,all,,,36
lsel,s,,,11,12
lsel,a,,,15,16
lesize,all,,,9
lsel,s,,,13,14
lesize,all,,,42
allsel
mat,1
amesh,6
mat,2
amesh,1,5,2
mat,3
amesh,2,4,2
lsel,s,,,2
nsll,s,1
!d,all,vx,0
!d,all,vy,0
d,all,temp,300
!lsel,s,,,3
!nsll,s,1
!d,all,vx,0
!d,all,vy,0
!d,all,temp,300
!lsel,s,,,1
!nsll,s,1
!d,all,pres,0.0
!lsel,s,,,10,16,2
!lsel,a,,,17
!nsll,s,1
!d,all,vx,0
!d,all,vy,0
lsel,s,,,13
nsll,s,1
!nsel,r,loc,x,0.00085,0.00135
d,all,temp,350
alls
mp,kxx,2,150
mp,c,2,700
mp,dens,2,2330
mp,kxx,3,0.0267
mp,dens,3,1.165
mp,c,3,1005
/solu
flda2,iter,exec,200
flda5,outp,sumf,50
flda13,vary,dens,1 !all properties MUST be variable
flda7,prot,dens,air-si
!flda13,vary,visc,1
flda7,prot,visc,air-si
flda13,vary,cond,1
flda7,prot,cond,air-si
!flda13,vary,spht,1
flda7,prot,spht,air-si
ACEL,0,9.81,0
FLDA21,CONV,PRES,1.0E-20 ! PCCR convergence
FLDA3,TERM,PRES,1.0E-20
flda,conv,outp,land
flda,solu,temp,t
save
solve
flda,solu,flow,f
flda,solu,temp,t
FLDA,METH,temp,3
flda21,conv,temp,1.0e-20
flda3,term,temp,1.0e-20
FLDA,ITER,EXEC,400
FLDA,RELX,TEMP,1.0
SOLVE
flda,iter,exec,100
flda,solu,flow,t
solve
!flda,iter,exec,50
!save
!solve
现在的问题是为什么中间的热对两边没有影响呢?两边根本感应不到温度场。 |