$CellNumber

Format

$CellNumber
 Nx
 Ny
 Nz                // where Nx, Ny, Nz are integers.

This defines the total number of nodes in x, y, and z directions. As a result, the total number of nodes in simulation is $\begin{smallmatrix}{N_x \times N_y\times N_z}\end{smallmatrix}$.

Example

$CellNumber
 201
 201
 201

Thus, there is 201 nodes in x direction, so as the number of nodes are in y and z direction.