吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (1): 151-156.doi: 10.13229/j.cnki.jdxbgxb201701022

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Analysis and experiment of effect of resonant tube on characteristics of standing wave levitation

JIANG Hai, LI Min-jiao, GU Shou-dong, ZHANG Sha-sha, ZHANG Kai, JIAO Xiao-yang, LIU Jian-fang   

  1. College of Mechanical Science and Engineering, Jilin University,Changchun 130022,China
  • Received:2016-01-11 Online:2017-01-20 Published:2017-01-20

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Abstract: To study the effect of resonant cavity on the standing wave levitation device, four different kinds of standing wave levitation simulation model with different resonant cavities are established. The acoustic pressures of the four levitation models with no resonant cavity and with different resonant cavity radii are analyzed by ANSYS. It is found that, under certain condition, the addition of resonant cavity to the standing wave levitation device can increase its levitation ability, while under other condition it can also reduce the levitation ability. When the resonant cavity radius is slightly larger than the reflect end face radius, the increase rate of the acoustic levitation force is maximized. An experimental platform of concave-concave standing wave levitation was set up. The experiment results are consistent with theoretical analysis results. When the resonant cavity radius is 1.023 times of the wave length, a 6.5 mm diameter steel sphere can be suspended, while when the resonant cavity radius is 1.251 times of the wave length, a 5.5 mm diameter steel sphere can not be suspended by the device.

Key words: mechnical design, resonant cavity, standing wave levitation, optimization design, levitation force

CLC Number: 

  • TB55
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