求助！顺序耦合法中的物理环境法的疑问

jsp613

在建好模型划分网格之后，创建流体物理环境时是否先要用asel命令选中流体区，然后设置流体边界条件？流体固体的材料属性都是在创建物理环境时才设置吗？对帮助文件中的橡胶垫的例子有点疑问。

!!!!!  Create element plot and write to the file gasket.grph
asel,s,,,1,3
esla,s
/Title, Initial mesh for gasket and neighborhood  此处定义分析标题干什么
eplot
/ZOOM,1,RECT,0.3,-0.6,0.4,-0.5  
alls
!-----------------
!!
!!!!!  2. Create Physics Environment for the Fluid   创建流体物理环境前不需要先选择流体区域吗？
et,1,141            
et,2,0        ! Gasket becomes the Null Element
vin=3.5e-1    ! Inlet water velocity (meters/second)
!!           CFD Solution Control
flda,solu,flow,1
flda,solu,turb,1
flda,iter,exec,400
flda,outp,sumf,10
!!           CFD Property Information
flda,prot,dens,constant
flda,prot,visc,constant
flda,nomi,dens,1000.   ! 1000 kg/m3 for density - water
flda,nomi,visc,4.6E-4  ! 4.6E-4 kg-s/m (viscosity of water)
flda,conv,pres,1.E-8   ! Tighten pressure equation convergence
!!    CFD Boundary Conditions (Applied to Solid Model)
lsel,s,,,8,17,9
lsel,a,,,20
dl,all,,vx,0.,1      ! Centerline symmetry
lsel,s,,,9
dl,all,,vx,0.,1
dl,all,,vy,vin,1     ! Inlet Condition
lsel,s,,,2
lsel,a,,,18,19
lsel,a,,,21,22
dl,all,,vx,0.,1      ! Outer Wall
dl,all,,vy,0.,1
lsel,s,,,1,3,2
lsel,a,,,6
dl,all,,vx,0.,1      ! Gasket
dl,all,,vy,0.,1
lsel,s,,,15
dl,15,,pres,0.,1     ! Outlet pressure condition
!!! create named component of nodes at the bottom of gasket
lsel,s,,,1
nsll,,1
cm,gasket,node
nlist ! List initial nodal positions of the bottom of the gasket
/com, +++++++++ STARTING gasket coordinates --------

alls
/title,Fluid Analysis 此处为什么又要定义分析标题？
physics,write,fluid,fluid
!!
!!!!!  3.  Create Physics Environment for the Structure
!!
physics,clear
et,1,0      ! The Null element for the fluid region
et,2,56     ! Gasket element - material 2
mp,ex,2,2.82E+6    ! Young's modulus for rubber
mp,nuxy,2,0.49967  ! Poisson's ratio for the rubber  在此处定义材料属性？
tb,mooney,2
tbdata,1,0.293E+6  !  Mooney-Rivlin Constants
tbdata,2,0.177E+6  !    "     "        "

ypity

我也在做这方面的问题，有空可以一起讨论讨论吗？