基于扩散势能和自由体积的自扩散系数模型

来源 :化学物理学报 | 被引量 : 0次 | 上传用户：yuxinliuyun

【摘要】

：

在考虑自由体积和局部临界扩散势能的基础上,提出一种新的计算自扩散系数模型,并给出新模型中各个因子物理含义.同时还提出一种计算局部临界扩散势能的新方法,并应用于新模型

【作者】

：

尹小勇宋海华

【机构】

：

天津大学化工学院

【出处】

：

化学物理学报

【发表日期】

：

2004年期

【关键词】

：

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在考虑自由体积和局部临界扩散势能的基础上,提出一种新的计算自扩散系数模型,并给出新模型中各个因子物理含义.同时还提出一种计算局部临界扩散势能的新方法,并应用于新模型另外将衍生van der Waals状态方程应用于求解自由体积,式中所需径向分布函数由Morsali-Goharshadi方程得到.在相同条件下,新模型比原自由体积模型更准确.

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基于扩散势能和自由体积的自扩散系数模型

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