Influence of gas inertia and edge effect on squeeze film in near field acoustic levitation

Jin Li; Wenwu Cao; Pinkuan Liu; Han Ding

doi:10.1063/1.3455896

Influence of gas inertia and edge effect on squeeze film in near field acoustic levitation

Jin Li, Wenwu Cao, Pinkuan Liu, Han Ding

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Detailed analysis showed that the existing theoretical models for near field acoustic levitation are not good enough to interpret the experimental data. The best existing models can only work in a small range of the squeeze numbers even with a fitting parameter. We report here a comprehensive nonlinear model, which takes into account the nonuniform surface vibration profile, gas inertia as well as entrance pressure drop at the film edge. Our model has no empirical parameters and the predicted results agree exceptionally well with our experimental measurements over a wide range of squeeze numbers.

Original language	English (US)
Article number	243507
Journal	Applied Physics Letters
Volume	96
Issue number	24
DOIs	https://doi.org/10.1063/1.3455896
State	Published - Jun 14 2010

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3455896

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title = "Influence of gas inertia and edge effect on squeeze film in near field acoustic levitation",

abstract = "Detailed analysis showed that the existing theoretical models for near field acoustic levitation are not good enough to interpret the experimental data. The best existing models can only work in a small range of the squeeze numbers even with a fitting parameter. We report here a comprehensive nonlinear model, which takes into account the nonuniform surface vibration profile, gas inertia as well as entrance pressure drop at the film edge. Our model has no empirical parameters and the predicted results agree exceptionally well with our experimental measurements over a wide range of squeeze numbers.",

author = "Jin Li and Wenwu Cao and Pinkuan Liu and Han Ding",

note = "Funding Information: This research was supported in part by National Natural Science Foundation of China under Grant No. 50675132 and the Science & Technology Commission of Shanghai Municipality under Grant Nos. 09JC1408300 and 2009B074. ",

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AU - Li, Jin

AU - Cao, Wenwu

AU - Liu, Pinkuan

AU - Ding, Han

N1 - Funding Information: This research was supported in part by National Natural Science Foundation of China under Grant No. 50675132 and the Science & Technology Commission of Shanghai Municipality under Grant Nos. 09JC1408300 and 2009B074.

PY - 2010/6/14

Y1 - 2010/6/14

N2 - Detailed analysis showed that the existing theoretical models for near field acoustic levitation are not good enough to interpret the experimental data. The best existing models can only work in a small range of the squeeze numbers even with a fitting parameter. We report here a comprehensive nonlinear model, which takes into account the nonuniform surface vibration profile, gas inertia as well as entrance pressure drop at the film edge. Our model has no empirical parameters and the predicted results agree exceptionally well with our experimental measurements over a wide range of squeeze numbers.

AB - Detailed analysis showed that the existing theoretical models for near field acoustic levitation are not good enough to interpret the experimental data. The best existing models can only work in a small range of the squeeze numbers even with a fitting parameter. We report here a comprehensive nonlinear model, which takes into account the nonuniform surface vibration profile, gas inertia as well as entrance pressure drop at the film edge. Our model has no empirical parameters and the predicted results agree exceptionally well with our experimental measurements over a wide range of squeeze numbers.

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Influence of gas inertia and edge effect on squeeze film in near field acoustic levitation

Abstract

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