【附apdl】flotran辐射问题：如何设置固液界面的面对面辐射？

hustxiaoli

apdl如下

/filname,flotranFlow
/PREP7

tup=1273
tbot=1873

lx=100
ndx=50

ly1=10
ly2=40
ly3=10

ndy1=10
ndy2=40
ndy3=10

yoffset=0
et,1,141
!keyopt,1,1,2 !设置为两组分


rectng,,lx,yoffset,yoffset+ly1
rectng,,lx,yoffset+ly1,yoffset+ly2+ly1
rectng,,lx,yoffset+ly2+ly1,yoffset+ly3+ly2+ly1

numcmp,all

alls
lsel,s,,,1,11,2

lesize,all,,,ndx

alls              
lsel,s,,,2,10,8   
lsel,a,,,4,12,8   
lesize,all,,,ndy1  

alls              
lsel,s,,,6,8,2   
lesize,all,,,ndy2
allsel,all

mat,1
amesh,2

mat,2
amesh,3
amesh,1

mp,dens,2,2.5   
mp,kxx,2,100     
mp,c,2,13        
                 

!定义入口条件
lsel,s,,,8
nsll,s,1
d,all,pres,10
d,all,temp,500
allsel


!定义出口条件
lsel,s,,,6
nsll,s,1
d,all,pres,0
allsel

!定义辐射表面
lsel,s,,,5
lsel,a,,,7
nsll,s,1
sf,all,rdsf,0.9,-1
allsel


!定义温度条件
lsel,s,,,10,12,1
dl,all,,temp,tup,1

allsel
lsel,s,,,1,2,1
lsel,a,,,4
dl,all,,temp,tbot,1
!++++++++++++++++++++++++++++++++++++++++++++++++   
!++++++++++++++++++++++++++++++++++++++++++++++++
allsel
lsel,s,,,9
lsel,a,,,7
nsll,s,1
nummrg,node

!+++++++
allsel
lsel,s,,,3
lsel,a,,,5
nsll,s,1
nummrg,node

!++++++++++++++++++++++++++++++++++++++++++++++++
!++++++++++++++++++++++++++++++++++++++++++++++++
allsel
lsel,s,,,5
nsll,s
esln,r
cm,glass,elem

allsel
lsel,s,,,7
nsll,s
esln,r
cm,fwall,elem
alls

fini
/aux12

stef,5.67e-8
toffst,273.15
radopt,0.1,0.1,0,1000,0.1,0.1
spctemp,1,20
         
alls
VFCALC
VFQUERY,fwall,glass
*GET,VFAVG1,RAD,,VFAVG
VFQUERY,fwall,fwall
*GET,VFAVG2,RAD,,VFAVG
VFQUERY,glass,glass
*GET,VFAVG3,RAD,,VFAVG

finish


上面是我做的热辐射apdl，不过运行有问题：我在流体边界5和7上加上了热辐射：
!定义辐射表面
lsel,s,,,5
lsel,a,,,7
nsll,s,1
sf,all,rdsf,0.9,-1
allsel

然后把流体边界和固体边界节点合并就出问题了

allsel
lsel,s,,,9
lsel,a,,,7
nsll,s,1
nummrg,node

!+++++++
allsel
lsel,s,,,3
lsel,a,,,5
nsll,s,1
nummrg,node

提前几何模型是用lglue合并辐射加不上。

这个问题如何解决，不用节点合并？ 我在帮助文档上看到能再固液界面上热辐射，
Since radiation can pass through a fluid region and impact on a solid, you can apply the surface-to-surface radiation load on a fluid/solid interface, as well as on external model boundaries. In this case, you should apply the RDSF load to either the fluid or solid element faces, or the solid entity defining the interface.
但如何在固液界面上加载热辐射没有找到。
谢谢各位。

hustxiaoli

怎么都没人看呀。