【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。更多还原

【Abstract】 To research the particle measurement with ultrasonic, Allegra & Hawley model was introduced to studythe acoustical propagation in suspensions. Based on two examples of TiO2 - Water and Iron-Water suspension, theattenuation and phase velocity were analyzed. The influence of frequency, particle size and concentration was investigatedin this paper. At the same time, the parameter sensitivity of this model was discussed.更多还原