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Separation and Concentration of Particles in Fluid using Ultrasonic Standing Wave

机译：超声波驻波法分离和富集流体中的颗粒

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This paper presents the theory, design, and evaluation of a smart device for the enhanced separation of particles mixed in fluid. The smart device takes advantage of the ultrasonic standing wave, which was generated by the operation of a piezoceramic PZT patch installed in the smart device. The details of the device design including the electro-acoustical modelling for separation and PZT transducer are described at first. Based on this design, the separation device was fabricated and evaluated. In the experiments, an optical camera with a zoom lens was used to monitor the position of particles within the separation channel layer in the device. The electric impedance of the PZT patch bonded on the separation device was measured. The device shows a strong levitation and separation force against 50 μm diameter particles mixed with water at the separation channel in the device. Experimental results also showed that the device can work at both heavy and light sand particles mixed with water due to the generated standing wave field in the separation channel.
机译：本文介绍了一种用于增强分离流体中混合颗粒的智能设备的理论，设计和评估。智能设备利用了超声波驻波的优势，该驻波是由智能设备中安装的压电陶瓷PZT贴片的操作产生的。首先描述设备设计的细节，包括用于分离的电声建模和PZT换能器。基于该设计，制造并评估了分离装置。在实验中，带有变焦镜头的光学相机用于监视设备中分离通道层内颗粒的位置。测量结合在分离装置上的PZT贴剂的电阻抗。该设备对在设备中分离通道处与水混合的直径为50μm的颗粒表现出强大的悬浮和分离力。实验结果还表明，由于在分离通道中产生的驻波场，该装置可以在混有水的重沙粒和轻沙粒上工作。

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