"$CellNumber" 修訂間的差異
出自 DDCC TCAD TOOL Manual
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<font size=3 color=red>'''NOTE 1'''<font color=black>: The priority of this function is below the function -- [[$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 [[$Deltaxyz]].</font><br> |
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| − | '''NOTE 2'''<font color=black>: Since the position of the last point would not be beyond the boundary we set in [[$SpaceRegion]], the mesh size may be different with what we think on intuition. For instance, if Nx=101 from x=0~100e-9 (m), dx = 100e-9/(101-1+0.5) ~9.95e-10 (m). |
+ | '''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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於 2018年10月11日 (四) 17:09 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 
.
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 from x=0~100e-9 (m), 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
