| 剪应力下弱作用势胶体颗粒聚团的特点 |
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| 引用本文： | 李敬生,P.Mark Rodger.剪应力下弱作用势胶体颗粒聚团的特点[J].物理化学学报,1997,13(1):20-27. |
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| 作者姓名： | 李敬生 P.Mark Rodger |
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| 作者单位： | Department of Metallurgy,Xi'an University of Archtecture and Technology,Department of Chemistry,University of Reading,U.K |
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| 摘 要： | 探讨了不同剪应力下，具有Ｌｅｎｎａｒｄ－Ｊｏｎｅｓ势的胶体颗粒聚团的结构特性，包括簇团的大小分布，径向分布函数，分形维数和原子配位数。研究表明，在弱作用力下，胶体簇团的分布随剪应力的增加而趋向小簇团一边；径向分布函数曲线随剪应力的增加而降低，胡在近程距离内降低得最多；分形维数随剪应力的增加表现为先增加后减小的趋势，其值随模拟条件的不同而在１．９－２．４之间变动。剪应力“场”对分形维数的大小没有太大
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| 关 键 词： | 胶体 聚团 计算机模拟 |
| 收稿时间： | 1996-05-31 |
| 修稿时间： | 1996-09-20 |
Characteristics of Colloidal Aggregates with Weakly Bound Potentiai under Shear |
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| Li Jingsheng.Characteristics of Colloidal Aggregates with Weakly Bound Potentiai under Shear[J].Acta Physico-Chimica Sinica,1997,13(1):20-27. |
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| Authors: | Li Jingsheng |
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| Institution: | Department of Metallurgy,Xi'an University of Archtecture and Technology|Department of Chemistry,University of Reading,U.K |
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| Abstract: | PLesearch on characteristics of colloidal aggregates with Lennard-Jones potential under shear has been carried out. The features included cluster size distribution, radial distribution function, fractal dimension and coordination numbers. It revealed that cluster size distribution approached to smaller size, radial distribution function and coordination number reduced graduately with increasing shear rates. When shear rates increased, fractal dimension ranging 1.9-2.4 increased first then decreased slightly. Shear did not change fractal dimension obviously, however(clusters were stretched at X (shear rate) direction and deviated from the X direction at high shear rates. |
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| Keywords: | Colloids Aggregates Computer simulation |
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