Kiva cell/vertex connectivity arrays.
c +++ kiva-3 notation: i4 refers both to vertex #4 and the cell shown:
c +++
c +++
c +++ 7/--------/|6
c +++ / / |
c +++ / | / |
c +++ / / |
c +++ 8/--------/5 |
c +++ | | | |
c +++ | | |
c +++ | 3|- -| - |2
c +++ | / | /
c +++ | | /
c +++ | / | /
c +++ | |/
c +++ 4----------1
c +++ top=i8tab(i4)
c +++ |
c +++ | derriere=i3tab(i4)
c +++ | /
c +++ | /
c +++ |/
c +++ left=imtab(i4)--------<i4>-----right=i1tab(i4)
c +++ /|
c +++ / |
c +++ / |
c +++ front=jmtab(i4) |
c +++ |
c +++ bottom=kmtab(i4)
c
c ======================================================================
cell 'i4' is connected to vertex 'i4'.
To get the points of cell 'i' is thus done in the following way:
i
i1tab(i)
i3tab(i1tab(i))
i3tab(i)
i8tab(i)
i1tab(i8tab(i))
i3tab(i1tab(i8tab(i)))
i3tab(i8tab(i))
Only three of the faces have boundary condition. They are stored in the following arrays
bcl - boundary condition left face
bcf - boundary condition front face
bcb - boundary condition bottom face
To get the other boundary conditions, you must get the neighbouring cells
and obtain the bc from them.
The bc values are:
1.0 - moving - moving (piston top)
2.0 - solid - solid (wall)
3.0 - axis - center axis, line
4.0 - fluid - fluid (i.e. no bc)
5.0 - periodf - front periodic bc
6.0 - periodd - back periodic bc
7.0 - inflow - inflow
8.0 - outflow - outflow
9.0 - presin - pressure inflow
10.0 - presout - pressure outflow
c ======================================================================
fv - flag for vertices
The values are:
0.0 - inactive vertex
1.0 - flfluid - interior (fluid) vertex
2.0 - flface - vertex on a moving surface (piston/valve)
3.0 - flbowl - vertex within the piston bowl
4.0 - flsqsh - vertex in squish region and above piston
5.0 - fldome - vertex within head, but not on the surface itself
6.0 - flhead - vertex on the head surface
c ======================================================================
f - flag for cells
The values are:
0.0 - inactive (ghost) cell
1.0 - active cell
c ======================================================================
idface - vertex flag for moving surface
The values are:
-1 - Not on a moving surface
0 - Piston top
1..6 - Valve nr.
c ======================================================================
idreg - cell region number.
c ======================================================================
The first non-ghost cell will be '
