"$CourantFactor" 修訂間的差異
出自 DDCC TCAD TOOL Manual
(已建立頁面，內容為 "=='''Format'''== $CourantFactor ''fp'' <font color=green>// where ''fp'' is an floating point and <math>\begin{smallmatrix}{\color{PineGreen}fp\; \...") |
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=='''Format'''== |
=='''Format'''== |
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$CourantFactor |
$CourantFactor |
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| − | '' |
+ | ''S'' <font color=green>// where ''S'' is an floating point and <math>\begin{smallmatrix}{\color{OliveGreen}S\ \leq\ 1.0}\end{smallmatrix}</math>.</font> |
<font size=3> |
<font size=3> |
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| − | Source%dir, Source%posi. |
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| + | <math>\Delta t = \frac{S}{c\sqrt{\frac{1}{{\Delta x}^2}+\frac{1}{{\Delta y}^2}+\frac{1}{{\Delta z}^2}}}</math> |
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| + | |||
| + | Where ''c'' is the light speed in the vacuum, you can see more details in Eq. 4.60. <br> |
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| + | The default value is 0.999999. <br> |
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| + | '''Note:''' ''S'' is not equal to the courant number. |
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</font> |
</font> |
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| + | |||
| + | =='''Example'''== |
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| + | $CourantFactor |
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| + | 0.999 |
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| + | |||
| + | Then ''S'' will be 0.999. |
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=='''Example'''== |
=='''Example'''== |
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於 2018年7月12日 (四) 09:54 的修訂
Format
$CourantFactor S // where S is an floating point and.
Where c is the light speed in the vacuum, you can see more details in Eq. 4.60.
The default value is 0.999999.
Note: S is not equal to the courant number.
Example
$CourantFactor 0.999
Then S will be 0.999.
Example
$CourantFactor 3 1500e-9
This means the program has 2 objects in the simulation.
