| 流体中声速计算模型的开发和预测 |
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| 引用本文： | 陈爽,郭绪强.流体中声速计算模型的开发和预测[J].青岛大学学报(工程技术版),2007,22(3):73-76,81. |
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| 作者姓名： | 陈爽 郭绪强 |
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| 作者单位： | 中国石油大学(华东)化学化工学院,山东,东营,257061;中国石油大学(北京)化学化工学院,北京,102249 |
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| 摘 要： | 针对目前声速模型存在参数难以确定,不能同时适用于气液两种相态等问题,通过分析压力、声速及温度三者的关系,基于PR状态方程开发了声速的新计算模型。在温度为273~364 K,压力为0.1~96.5 MPa的范围内,利用该模型对水介质中总共124个声速数据点计算的总平均误差为0.61%;乙醇介质中总共48个声速数据点计算的总平均误差为0.53%;对水和乙醇混合物中总共79个声速数据点计算的总平均误差为3.16%。通过和Wilson声速模型的预测误差对比,得出PR声速模型预测精度较好。
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| 关 键 词： | 流体声速 声速计算模型 PR状态方程 |
| 文章编号： | 1006-9798（2007）03-0073-04 |
| 收稿时间： | 2007-05-11 |
| 修稿时间： | 2007-05-11 |
Study and Prediction of Sound Velocity Models in Fluid |
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| CHEN Shuang,GUO Xu-qiang.Study and Prediction of Sound Velocity Models in Fluid[J].Journal of Qingdao University(Engineering & Technology Edition),2007,22(3):73-76,81. |
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| Authors: | CHEN Shuang GUO Xu-qiang |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, China University of Dongying 257061, China; 2. College of Chemis China University of Petroleum (Beijing;Huadong |
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| Abstract: | In view of undeterminable parameters andinadaptability to both gas and liquid in existing acoustic velocity models,a new sound velocity model based on PREOS has been established by analysing relationship between pressure,speed of sound and temperature.In a temperature range (from 273 K to 364 K) and a pressure range (from 0.1 MPa to 96.5 MPa),the velocites of sound in water and ethanol are calculated respectively.The research showed that the mean error of 124 date points is 0.61% in water,the mean error of 48 data points is 0.53% in ethanol,and in mixture of water and ethanol the mean error of 79 data points is 3.16 %.Compared with the Wayne D. Wilson equation of acoustic velocity,a significant improvement is shownin precision. |
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| Keywords: | fluid velocity computation module of acoustic velocity PRstate equation |
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