"$CellNumber" 修訂間的差異

出自 DDCC TCAD TOOL Manual
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<font size=3 color=red>'''NOTE 1'''<font color=black>: The priority of this function is below the function -- [[$Deltaxyz]], ''i.e.'', the program abandons [[$CellNumber]] while using [[$Deltaxyz]].</font><br>
 
<font size=3 color=red>'''NOTE 1'''<font color=black>: The priority of this function is below the function -- [[$Deltaxyz]], ''i.e.'', the program abandons [[$CellNumber]] while using [[$Deltaxyz]].</font><br>
'''NOTE 2'''<font color=black>: Since the position of the last point would not be beyond the boundary we set in [[$SpaceRegion]], the mesh size may be different with what we think on intuition. For instance, if Nx=101 from x=0~100e-9 (m), dx = 100e-9/(101-1'''+0.5''') ~9.95e-10 (m).
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'''NOTE 2'''<font color=black>: Since the position of the last point would not be beyond the boundary we set in [[$SpaceRegion]], the mesh size may be different with what we think on intuition. For instance, if Nx=101 and x is from 0~100e-9 (m), so dx = 100e-9/(101-1'''+0.5''') ~9.95e-10 (m).
   
 
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於 2018年10月11日 (四) 17:10 的修訂

Format

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

This defines the total number of nodes in x, y, and z directions. Note that this function is not include the layer of PML. That is, the total number of nodes in simulation may NOT be \begin{smallmatrix}{N_x \times N_y\times N_z}\end{smallmatrix}.

NOTE 1: The priority of this function is below the function -- $Deltaxyz, i.e., the program abandons $CellNumber while using $Deltaxyz.
NOTE 2: Since the position of the last point would not be beyond the boundary we set in $SpaceRegion, the mesh size may be different with what we think on intuition. For instance, if Nx=101 and x is from 0~100e-9 (m), so dx = 100e-9/(101-1+0.5) ~9.95e-10 (m).

Example

$CellNumber
 201
 201
 201

Thus, without PML, there is 201 nodes in x direction, so as the number of nodes are in y and z direction.

Related commands

$SpaceRegion, $CellNumber, $Deltaxyz