| 查看: 309 | 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
博士推荐
已经有4人回复
-
求环氧树脂研发1名
已经有10人回复
-
280求调剂
已经有5人回复
-
什么是人一生最重要的？
已经有10人回复
-
面上可以超过30页吧？
已经有13人回复
-
网上报道青年教师午睡中猝死、熬夜猝死的越来越多，主要哪些原因引起的？
已经有10人回复
-
为什么中国大学工科教授们水了那么多所谓的顶会顶刊，但还是做不出宇树机器人？
已经有13人回复
-
版面费该交吗
已经有17人回复
-
【博士招生】太原理工大学2026化工博士
已经有8人回复
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
|
综合大家意见，改为如下：请指正 介绍自己两句省略，I am writing to solicit your kind help as I have a few questions regarding the diffusion on porous media. 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 not. Does spectral dimension have to be applied in a fractal structure? How about other structure? Please give me some suggestion on the method. I am looking forward to your response at the earliest convenience. Thank you very much for your time on this. Sincerely yours |
8楼2009-11-17 15:01:25
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