Interplays between elastic particles in an ultrasonic standing wave

2020 ◽  
Vol 13 (2) ◽  
pp. 027005
Author(s):  
Kun Jia ◽  
Liqiang Li ◽  
Yulong Wang ◽  
Keji Yang ◽  
Jian Chen
Keyword(s):  
Standing Wave ◽  
Ultrasonic Standing Wave ◽  
Elastic Particles

scholarly journals Mathematical modeling and experimental study on solid–liquid suspension separation in ultrasonic standing wave field

2021 ◽  
pp. 146134842110229
Author(s):  
Yajing Wang ◽  
Liqun Wu ◽  
Yaxing Wang ◽  
Yafei Fan
Keyword(s):  
Standing Wave ◽  
Sound Pressure ◽  
Acoustic Radiation ◽  
Sound Field ◽  
Radiation Force ◽  
High Energy ◽  
Factors Affecting ◽  
Liquid Suspension ◽  
Ultrasonic Standing Wave ◽  
Solid Liquid

A new method of removing waste chips is proposed by focusing on the key factors affecting the processing quality and efficiency of high energy beams. Firstly, a mathematical model has been established to provide the theoretical basis for the separation of solid–liquid suspension under ultrasonic standing wave. Secondly, the distribution of sound field with and without droplet has been simulated. Thirdly, the deformation and movement of droplets are simulated and tested. It is found that the sound pressure around the droplet is greater than the sound pressure in the droplet, which can promote the separation of droplets and provide theoretical support for the ultrasonic suspension separation of droplet; under the interaction of acoustic radiation force, surface tension, adhesion, and static pressure, the droplet is deformed so that the gas fluid around the droplet is concentrated in the center to achieve droplet separation, and the droplet just as a flat ball with a central sag is stably suspended in the acoustic wave node.

Performance study of standing wave levitation with emitting and reflecting surface of concave sphere structure

2013 ◽  
Vol 227 (11) ◽  
pp. 2504-2516 ◽  
Author(s):  
Xiaoyang Jiao ◽  
Guojun Liu ◽  
Jianfang Liu ◽  
Xiaolun Liu
Keyword(s):  
Standing Wave ◽  
Spherical Surface ◽  
Radiation Force ◽  
Structural Parameter ◽  
Matlab Simulation ◽  
Performance Study ◽  
Ansys Software ◽  
Ultrasonic Standing Wave ◽  
Steel Balls ◽  
Reflecting Surface

In order to improve levitation capability and stability of ultrasonic standing wave, a novel levitation device was presented, which adopted concave spherical surface on the emitter and the reflector. Using ANSYS software, the acoustic field generated by the concave spherical emitting surface was analyzed and the formation of ultrasonic standing wave was simulated. Based on the simulation result, the distribution and maximum acoustic pressure under different radius of concave spherical surface on the emitter and the reflector were ascertained. Through the MATLAB simulation, the optimal structural parameter and levitation position were predicted. Based on the optimization result, the prototype of standing wave levitation device was designed and manufactured. In the laboratory, the radiation force was tested and levitation experiments were also carried out and the actual levitation position was in accordance with the simulation results. When the distance between the emitter and the reflector equaled to about 34.9 mm, three steel balls of 3 mm diameter could be levitated at the same time in three disparate nodes position, the levitation capability and stability were demonstrated to be enhanced largely.

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