摘要
根据对应状态原理，本文给出了一个适用于液体的普遍化等温状态方程。该方程的计算远比文献方程简单，适用范围却比文献方程广得多，计算精度也比文献方程高或相近。只需要一个物理意义明确、能用普遍化方法加以计算且和温度无关的参数，方程即可用于极性、非极性、缔合液体从三相点一直到临界点密度的计算。该方程还可以用于聚合物密度的计算。
Abstract-A new generalized isothermal equation of state for liquid is obtained based on thelaw of corresponding state. The calculation of the equation is much simpler than that of literature equations but the applicable range is wider and the precision is higher than (or close to)that of the latter. Only one temperature independent parameter is needed for the density calculation from triple point up to- critical point for both polar and nonpolar liquids including stronglyassociating liquids. The parameter has obvious physical sighificance and can be obtained from generalized correlations. The equation can also be applied to polymers satisfactorily.
出处
《上海第二工业大学学报》
1996年第1期51-58,共8页
Journal of Shanghai Polytechnic University
关键词
状态方程
液体
等温压缩系数
高聚物
equation of state
liquid
density
isothermal compressibility
the law of corresponding state.
