| 查看: 315 | 回复: 7 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
ivancen金虫 (正式写手)
|
[交流]
我写一封信求助国外一位教授，请大家帮我改一下
|
||
|
I am very interested in the diffusion on porous media. I have a question to ask for you help. Please help me, I feel very confused. Usually, the spectral dimension was calculated on percolation system and homo or hererogeneous fractal structure,for example,DLA, Sierpinski gaskets,fractal trees etc..Some consequences obeyed the AO conjecture, but some deviated. Now I want to calculate the spectral dimension of a kind of catalyst through three steps below: 1 Correlation function of pore and mass is detemined by SAXS method, because the catalyst is a kind of mesoporous media. 2 Building the 3d model of catalyst by 3d reconstruction method based on correlaton function. (Simulated Annealing method was carried on.) 3 Calculating the spectral dimension in this model by Monte Calor method. The structure of my catalyst model is not a fractal,because of the correlation properties.But it is a disordered system and the diffusion is anomalous. Obviously the result of spectral dimension deviates 4/3. I don't know it would be right or fault. Then, spectral dimension must be caculated in a fractal structure? How about other structure? Please criticize my method. I sincerely expect your response. Thank you for your kind attention! Sincerely yours |
回复此楼» 猜你喜欢
285求调剂
已经有10人回复
-
353求调剂
已经有7人回复
-
求调剂
已经有7人回复
-
材料化工306分找合适调剂
已经有11人回复
-
调剂
已经有8人回复
-
工科求调剂
已经有13人回复
-
复试调剂
已经有5人回复
-
一志愿北京化工085600 310分求调剂
已经有11人回复
-
一志愿北京2，材料与化工308求调剂
已经有10人回复
-
0817化学工程与技术求调剂，一志愿中海洋319
已经有9人回复
7楼2009-11-17 14:57:26
2楼2009-11-17 13:42:51
ivancen
金虫 (正式写手)
- 应助: 0 (幼儿园)
- 金币: 1059.2
- 帖子: 513
- 在线: 50.6小时
- 虫号: 421435
- 注册: 2007-07-14
- 性别: GG
- 专业: 材料/催化剂
|
我自己改了一下，请指正 I am writing to solicit your kind help as I am confused by a question related to the diffusion on porous media which I have been intereseted in. Usually, the spectral dimension was calculated on percolation system at the threshold and homo or hererogeneous fractal structure for example,DLA, sierpinski gaskets,fractal trees.Some consequences obeyed the AO conjecture, but some deviated. Now I want to calculate the spectral dimension of a kind of catalyst through the following three steps: 1 The correlation function of pore and mass phase of the catalyst is determined by SAXS, because the catalyst is a kind of mesoporous media. 2 Building a three dimension model of the catalyst through a 3d reconstruction method based on the correlaton function of pore and mass . (Simulated Annealing method was carried on.) 3 Calculating the spectral dimension in this model by Monte Calor method. The catalyst model is not a fractal structure,because of the correlation properties of pore and mass. However it is a disordered system and the diffusion is anomalous. And the result of spectral dimension deviates 4/3. I don't know whether the result is right or wrong. Does spectral dimension have to be applied in a fractal structure? How about other structure? Please criticize my method. |
4楼2009-11-17 14:29:06
jhuiuc
至尊木虫 (正式写手)
- 应助: 0 (幼儿园)
- 贵宾: 0.03
- 金币: 11259.7
- 红花: 4
- 帖子: 556
- 在线: 917.9小时
- 虫号: 802252
- 注册: 2009-07-02
- 性别: GG
- 专业: 工程热物理相关交叉领域
5楼2009-11-17 14:37:33
10