Gillis, K.
(2012),
Second-order boundary corrections to the radial acoustic eigenvalues for a spherical cavity, Metrologia, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911620
(Accessed May 21, 2025)
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Second-order boundary corrections to the radial acoustic eigenvalues for a spherical cavity
Published
Author(s)
Abstract
We calculated the eigenvalues of the radially-symmetric acoustic modes of a gas-filled, spherical cavity to order (δT/a)2, where δT is the thickness of the thermal boundary layer and a is the radius of the cavity. Our results are consistent with high-precision acoustic measurements made to re-determine the Boltzmann constant.Citation
Metrologia
Volume
49
Issue
6
Pub Type
Journals
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Keywords
Boltzmann constant, spherical resonator, speed of sound, second order, radial modes, eigenvalues
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Created August 17, 2012, Updated February 19, 2017