| 超细颗粒悬浊液中声衰减和声速的数值分析研究 |
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| 引用本文： | 苏明旭, 蔡小舒. 超细颗粒悬浊液中声衰减和声速的数值分析研究[J]. 声学学报, 2002, 27(3): 218-222. DOI: 10.15949/j.cnki.0371-0025.2002.03.006 |
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| 作者姓名： | 苏明旭 蔡小舒 |
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| 作者单位： | 1.上海理工大学颗粒与二相流测量技术研究所 上海 200093 |
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| 基金项目： | 国家自然科学基金资助项目(50176033) |
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| 摘 要： | 为研究应用超声测量超细颗粒的粒度和浓度,本文由描述声波在悬浊液中传播的Allegra & Hawley数学模型出发,通过两个算例的数值模拟计算,研究了二氧化钛-水,铁粉-水两种超细颗粒悬浊液中声波传播的衰减和相速度,分析了声波的频率、颗粒尺寸和浓度对衰减和相速度的影响规律,并讨论了计算模型对不同物性参数的敏感程度。
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| 收稿时间： | 2000-11-15 |
| 修稿时间： | 2000-12-27 |
The numerical study of acoustical attenuation and velocity in the suspension of superfine particles |
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| SU Mingxu, CAI Xiaoshu. The numerical study of acoustical attenuation and velocity in the suspension of superfine particles[J]. ACTA ACUSTICA, 2002, 27(3): 218-222. DOI: 10.15949/j.cnki.0371-0025.2002.03.006 |
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| Authors: | SU Mingxu CAI Xiaoshu |
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| Affiliation: | 1.Institute of Particle and Two Phase Flow Measurement Technology, University of Shanghai for Science andTechnology Shanghai 200093 |
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| Abstract: | To research the particle measurement with ultrasonic, Allegra & Hawley model was introduced to study the acoustical propagation in suspensions. Based on two examples of TiO2 - Water and Iron-Water suspension, the attenuation and phase velocity were analyzed. The influence of frequency, particle size and concentration was investigated in this paper. At the same time, the parameter sensitivity of this model was discussed. |
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