A novel method for predictions of the sound pressure distribution in acoustic levitators is based on a matrix representation of the Rayleigh integral. This method allows for a fast calculation of the acoustic field within the resonator. To make sure that the underlying assumptions and simplifications are justified, this approach was tested by a direct comparison to experimental data. The experimental sound pressure distributions were recorded by high spatially resolved frequency selective microphone scanning. To emphasize the general applicability of the two approaches, the comparative studies were conducted for four different resonator geometries. In all cases, the results show an excellent agreement, demonstrating the accuracy of the matrix method.
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January 2014
Research Article|
January 15 2014
Experimental and numerical characterization of the sound pressure in standing wave acoustic levitators
A. Stindt;
A. Stindt
1
BAM Federal Institute for Materials Research and Testing
, Berlin, Germany
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M. A. B. Andrade;
M. A. B. Andrade
2Institute of Physics,
University of São Paulo
, São Paulo, Brazil
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M. Albrecht;
M. Albrecht
1
BAM Federal Institute for Materials Research and Testing
, Berlin, Germany
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J. C. Adamowski;
J. C. Adamowski
3Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica,
University of São Paulo
, São Paulo, Brazil
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U. Panne;
U. Panne
1
BAM Federal Institute for Materials Research and Testing
, Berlin, Germany
4Department of Chemistry,
Humboldt University Berlin
, Berlin, Germany
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a)
Electronic mail: jens.riedel@bam.de
Rev. Sci. Instrum. 85, 015110 (2014)
Article history
Received:
November 21 2013
Accepted:
December 18 2013
Citation
A. Stindt, M. A. B. Andrade, M. Albrecht, J. C. Adamowski, U. Panne, J. Riedel; Experimental and numerical characterization of the sound pressure in standing wave acoustic levitators. Rev. Sci. Instrum. 1 January 2014; 85 (1): 015110. https://doi.org/10.1063/1.4861197
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