| 用音速确定HFC125的第二维里系数和分子间势能参数 |
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| 引用本文： | 吴江涛,刘志刚.用音速确定HFC125的第二维里系数和分子间势能参数[J].西安交通大学学报,2000,34(11):5-8,26. |
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| 作者姓名： | 吴江涛 刘志刚 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 基金项目： | 国家自然科学基金!资助项目 (5 9976 0 30 ) . |
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| 摘 要： | 利用ＨＦＣ１２５的音速和非线性最小二乘法中的Ｌｅｖｅｎｂｅｒｇ－Ｍａｒｑｕａｒｄｔ方法，拟合得到一个新的具有更高精度和更广泛用范围的ＨＣＦ１２５第二维里系数计算关联式，可以用于流体其他热物性参数的计算，从第二维里系数和结一音速维里系数及其与分子间势能函数的关系，提出了用第二音速维里系数确定分子间势能模型参数的新方法，并推导出用第二音速维里系数拟合方阱，ＬＪ（６，１２）及Ｋｉｌｈａｒａ等势能模型参数
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| 关 键 词： | 第二维里系数 势能模型参数 音速 制冷剂 |
Determination of the Second Virial Coefficent and Intermolecular Potential Parameters of HFC125 from Sound Speed |
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| Wu Jiangtao,Liu Zhigang.Determination of the Second Virial Coefficent and Intermolecular Potential Parameters of HFC125 from Sound Speed[J].Journal of Xi'an Jiaotong University,2000,34(11):5-8,26. |
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| Authors: | Wu Jiangtao Liu Zhigang |
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| Abstract: | Based on the sound speed of pentafluoroethane (HFC125) and Levenberg Marquardt method, a new practical correlation equation was obtained for HFC125, which has higher accuracy and further applicability. In order to determine the intermolecular potential (including square well, Lennard Jones, Kihara, Stockmayer and etc) parameters, a new method was developed with the relationships of the second virial coefficient, the second acoustical virial coefficient and the intermolecular potential function. By the new method, the intermolecular potential (SW, LJ, Kihara) parameters of HFC125 was determined. Compared with the typical method, the new method has higher accuracy and reliability. |
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| Keywords: | the second virial coefficient acoustical virial coefficient intermolecular potential parameter sound speed HFC125 SW Lennard Jones Kihara |
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