The acoustic resonance frequencies were measured for argon from 270 to 333.15 K and pressures up to 1000 kPa using a cylindrical resonator.The perturbations in frequency measurements from thermal and viscous boundary layers,the fill duct and shell motions were corrected.The second acoustic virial coefficients were obtained by fitting the measured acoustic data.The results agree well with the experimental results by using spherical resonators.The second virial coefficients were determined by fitting the second acoustic virial coefficient and the square-well intermolecular model.The deviation of this work from the calculated value using the equation of state developed by Tegeler et al.is lower than 0.4 cm3 ·mol-1.The results show that the second virial coefficient can be determined using cylindrical resonators with low uncertainties.%通过圆柱定程干涉法测量了Ar在270～333.15 K,压力至1000 kPa的声学共振频率,修正了热边界层、黏性边界层、声波导管、壳体振动等非理想因素对共振频率测量的影响.通过拟合声学共振频率获得了Ar的第二声速维里系数,实验结果与文献中圆球定程干涉法的测量结果具有较好的一致性.通过第二声速维里系数回归了方阱势能模型的参数,根据回归结果计算了Ar的第二维里系数,在150～450 K范围与标准状态方程的计算偏差小于0.4 cm3·mol-1.通过圆柱定程干涉法确定的第二维里系数与圆球定程干涉法的精度相当.
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