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 journalArticle

21 Citations (Scopus)

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 languageEnglish (US)
Article number243507
JournalApplied Physics Letters
Volume96
Issue number24
DOIs
StatePublished - Jun 14 2010

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acoustic levitation
squeeze films
inertia
near fields
gases
pressure drop
entrances
vibration
profiles

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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Influence of gas inertia and edge effect on squeeze film in near field acoustic levitation. / Li, Jin; Cao, Wenwu; Liu, Pinkuan; Ding, Han.

In: Applied Physics Letters, Vol. 96, No. 24, 243507, 14.06.2010.

Research output: Contribution to journalArticle

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AU - Ding, Han

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