基于对比态原理的常压气体黏度关联式

VISCOSITY CORRELATIONS OF NORMAL GAS AT NORMAL ATMOSPHERIC PRESSURE

本文依据对比态原理,通过关联常压下气态物质的无量纲黏度η_r与对比温度T_r以及临界压缩因子Z_C,分别建立了适用于单原子气体、双原子气体、碳氢化合物气体以及卤代烃类气态物质的常压下黏度关联式。选用40种物质常压黏度数据对上述关联式分别进行了验证。与文献数据相比,气体黏度计算的相对偏差绝对平均值分别为:0.47%、0.45%、0.37%和0.43%。

According to the principle of corresponding states,for monoatomic gas,diatomic Gas,gaseous hydrocarbon,and gaseous halogenated hydrocarbon,viscosity correlations at normal atmospheric pressure were presented by correlating the dimensionless reduced viscosityη_r with the reduced temperature T_r and the critical compressibility factor Z_C.Applied these viscosity correlations,the viscosities of 40 normal gaseous substance at normal atmospheric pressure were calculated.By comparison of calculation results with the reference data,the absolute averages of the relative deviations（AAD） of the new correlating equations are 0.47%,0.45%,0.37%and 0.43%, respectively.