Published: August 17, 2012
Keith A. Gillis
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.
Pub Type: Journals
Boltzmann constant, spherical resonator, speed of sound, second order, radial modes, eigenvalues
Created August 17, 2012, Updated February 19, 2017