50 kHz/200 kHz声场水中疏水颗粒的瞬态及稳态团聚规律  

Transient and stable aggregation of hydrophobic particles in water in 50 kHz/200 kHz sound field

作　　者：陈昱冉 胡悦 卜祥宁[3] 何季麟 CHEN Yuran;HU Yue;BU Xiangning;HE Jilin(School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001;The Third Institute of Resources and Environment Investigation of Henan Province,Zhengzhou 450046;School of Chemical Engineering,China University of Mining and Technology,Xuzhou 221116)

机构地区：[1]郑州大学材料科学与工程学院,郑州450001 [2]河南省资源环境调查三院,郑州450046 [3]中国矿业大学化工学院,徐州221116

出　　处：《声学学报》2024年第1期146-154,共9页Acta Acustica

基　　金：国家自然科学基金项目(52204296);中国博士后科学基金项目(2022M722872)资助。

摘　　要：针对超声场存在的瞬态及稳态两种疏水颗粒团聚行为,分别选取50 kHz与200 kHz两个频率,通过高速摄像机对不同的声团聚现象进行观测,对比了瞬态及稳态团聚在团聚位置、速度及聚团形态、数量、强度等方面的差异,并从声辐射力和空化的角度分析了瞬态及稳态团聚不同的形成机制。研究结果表明,50 kHz声场与200 kHz声场分别引起瞬态和稳态声团聚,两种声团聚方式的行为和形成机制均存在较大差异。50 kHz and 200 kHz ultrasound were selected to study the transient and steady aggregation behaviors of hydrophobic particles in ultrasonic field,respectively.Different acoustic aggregation phenomena were observed by high-speed cameras,and the differences between the transient and steady aggregation in position,velocity,form,quantity and intensity were compared.The formation mechanisms of transient and steady aggregation are analyzed from the perspective of acoustic radiation force and cavitation.The results show that 50 kHz and 200 kHz acoustic field cause transient and steady acoustic aggregation,respectively.There are great differences in the behavior and formation mechanism of the two acoustic aggregation modes.

关 键 词：声团聚 疏水颗粒 空化气泡 声辐射力 

分 类 号：TB5[理学—物理]