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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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简单熔体粘滞系数的普适性标度关系
, PP. 1262-1266
Keywords: 标度关系,粘滞系数,过剩熵
Abstract:
运用分子动力学方法,对一系列简单熔体(包括Ag,Al,Au,Co,Cu,Mg,Ni,Pb,Pd,Pt,Rh和Si)的粘滞系数和过剩熵之间的标度关系进行了深入的研究.计算结果证实了Rosenfeld的粘滞系数标度关系,应用Dzugutov的方法定义了一个新的约化粘滞系数,并根据大量的模拟数据拟合出了一个新的粘滞系数标度关系.分析了在简单熔体中存在粘滞系数与过剩熵普适标度关系的物理本质,同时明确论证了标度关系与Arrhenius关系之间的密切联系,即过剩熵与温度的倒数存在正比关系.
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