"$CourantFactor" 修訂間的差異

出自 DDCC TCAD TOOL Manual
前往: 導覽搜尋
(Format)
行 10: 行 10:
 
'''Note:''' ''S'' is not equal to the Courant stability limit.
 
'''Note:''' ''S'' is not equal to the Courant stability limit.
 
</font>
 
</font>
  +
   
 
=='''Example'''==
 
=='''Example'''==

於 2018年7月12日 (四) 09:56 的修訂

Format

$CourantFactor
 S                // where S is an floating point and \begin{smallmatrix}{\color{OliveGreen}S\ \leq\ 1.0}\end{smallmatrix}.

\Delta t = \frac{S}{c\sqrt{\frac{1}{{\Delta x}^2}+\frac{1}{{\Delta y}^2}+\frac{1}{{\Delta z}^2}}}

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 stability limit.


Example

$CourantFactor
 0.999

Then S will be 0.999.