超细颗粒悬浊液中声衰减和声速的数值模拟——4种模型的比较  

Numerical study on acoustical attenuation and acoustical velocity in suspension of superfine particles—A comparison of four models

作　　者：苏明旭[1] 蔡小舒[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《上海理工大学学报》2002年第1期21-25,30,共6页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(50176033)

摘　　要：分别运用了4种数学模型: ECAH模型、Harker & Temple模型、BLBL模型以及McClements模型研究了声波在超细颗粒悬浊液中传播的衰减和相速度,对各种模型的数值模拟计算结果进行了比较,讨论了各种衰减机制对模拟结果的影响. 结果对将超声方法用于悬浊液和乳剂中的颗粒粒度、浓度测量的实验研究和工程应用均有一定参考价值.Four models that describe the propagation of ultrasound through two-phase media are compared. The models differ in the complexity of mathematical formulation, and the applicability of any model to real suspensions is limited by the assumptions implicit in the derivation. The Allegra and Hawley model is shown to give the most thorough interpretation of acoustic propagation through a suspension system.

关 键 词：颗粒测量 超声颗粒悬浊液 声衰减 声速 数值模拟 

分 类 号：O422[理学—声学] TB115[理学—物理]