"$ygradualdiv" 修訂間的差異
出自 DDCC TCAD TOOL Manual
| (未顯示由 2 位使用者於中間所作的 12 次修訂) | |||
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The second column ''r'' should be filled in a real number. |
The second column ''r'' should be filled in a real number. |
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| + | <br> |
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| + | [[File:Mesh2.png|600px]] |
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| + | <br> |
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{| class="wikitable" |
{| class="wikitable" |
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| 行 43： | 行 43： | ||
Then <math>l = a\frac{r^{N}-1}{r-1} </math> |
Then <math>l = a\frac{r^{N}-1}{r-1} </math> |
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| + | <br> |
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| + | If the total layer thickness is <math>l </math> and i=2, then if the smallest separation distance is a |
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| + | <math>l/2 = a+ar+ar^{2}+ar^{3}+ar^{4}+...+ar^{N/2} </math> |
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| + | where N is the total grid number defined in [[$ydiv]] |
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| + | Then <math>l = 2 \cdot a\frac{r^{N/2}-1}{r-1} </math> |
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<br> |
<br> |
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: Example |
: Example |
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| + | $ynode |
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| + | 0.0 |
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| + | 0.5 |
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| + | 2.0 |
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| + | 3.0 |
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| + | |||
| + | $ydiv |
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| + | 25 |
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| + | 30 |
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| + | 60 |
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| + | $ygradualdiv |
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| + | 0 |
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| + | 1 1.1 |
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| + | 2 0.9 |
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| + | <br>'''<big><big>The $ygradualdiv setting in GUI interface is here</big></big>''' <br> |
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| + | 1. After setting up the Y-nodes, press '''Edit the nodes'''.<br> |
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| + | 2. Choose the 1<sup>st</sup> node and set the Method to '''Uniform''' with a Mesh ratio of 0.00.<br> |
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| + | [[檔案:2D_ygradualdiv_fig1.jpg|1200px]]<br><br> |
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| + | 3. Choose the 2<sup>nd</sup> node and set the Method to '''Gradual change''' with a Mesh ratio of 1.10.<br> |
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| + | [[檔案:2D_ygradualdiv_fig2.jpg|1200px]]<br><br> |
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| + | 4. Choose the 3<sup>rd</sup> node and set the Method to '''Bump''' with a Mesh ratio of 0.90.<br> |
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| + | [[檔案:2D_ygradualdiv_fig3.jpg|1200px]]<br><br> |
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| + | [[檔案:2D_ygradualdiv_fig4.jpg|1200px]] |
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<br><br> |
<br><br> |
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: Related commands |
: Related commands |
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| − | :; [[$xgradualdiv]] |
+ | :; [[$xgradualdiv]],[[$ynode]],[[$ydiv]] |
於 2024年10月21日 (一) 17:42 的最新修訂
This function is to determine how the segment is divided. There are two columns to fill in. The first column i should be filled in an integer 0, 1, or 2.
i = 0: Uniform. This means the segment is divided equally with the same spacing. i = 1: Gradual. This means the segment is divided whether from small spacing to large spacing or in the opposite way. The spacing is distributed like a geometric progression i = 2: Bump. This means the segment can be divided into two forms small-large-small or large-small-large.
The second column r should be filled in a real number.
| If r < 1 | If r = 1 | If r > 1 | |
|---|---|---|---|
| Uniform (0) | uniform | uniform | uniform |
| Gradual (1) | large -> small | uniform | small -> large |
| Bump (2) | large -> small -> large | uniform | small -> large -> small |
If the total layer thickness isand i=1, then if the smallest separation distance is a
where N is the total grid number defined in $ydiv Then
If the total layer thickness iswhere N is the total grid number defined in $ydiv Then
- Example
$ynode 0.0 0.5 2.0 3.0
$ydiv 25 30 60
$ygradualdiv 0 1 1.1 2 0.9
The $ygradualdiv setting in GUI interface is here
1. After setting up the Y-nodes, press Edit the nodes.
2. Choose the 1st node and set the Method to Uniform with a Mesh ratio of 0.00.
3. Choose the 2nd node and set the Method to Gradual change with a Mesh ratio of 1.10.
4. Choose the 3rd node and set the Method to Bump with a Mesh ratio of 0.90.
- Related commands
