107 lines
3.2 KiB
Text
107 lines
3.2 KiB
Text
|
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 '
|