FLOW AROUND A CYLINDER - istiarto

– 4.48 –
Fig. 4.12 Typical spatial discretisation of the computational domain.
Table 4.5 Triple and single indexing of computational cells.
Direction Nodal index Cell index
x–direction i = 1, 2, ..., Ni i = 2, 3, ..., Ni–1
y–direction j = 1, 2, ..., Nj j = 2, 3, ..., Nj–1
z–direction k = 1, 2, ..., Nk k = 2, 3, ..., Nk–1
Cells in the xy–plane ij = 1, 2, ..., Nij
(Nij = Ni � Nj)
Cells in the domain ijk = 1, 2, ..., Nijk
(Nijk = Nij � Nk)
ij = 2, 3, ..., Nijm
[Nijm = (Ni–1) � (Nj–1)]
ijk = 2, 3, ..., Nijkm
[Nijkm = Nijm � (Nk–1)]
Cell Triple-index Single-index
P i,j,k ijk = (k–1) Nij + (i-1) Nj + j
E i+1,j,k ijk + Nj
W i–1,j,k ijk – Nij
N i,j+1,k ijk + 1
S i,j–1,k ijk – 1
T i,j,k+1 ijk + Nij
B i,j,k–1 ijk – Nij