The Opening Perturbation on Acoustic Cylinder Resonance
Acoustic resonance is one of primary methods to determination of the Boltzmann constant and thermodynamic temperatures and to measure viral coefficients of fluids, etc. For acoustic resonance procedure, a number of imperfect effects need to be addressed in order to approach sufficiently high accuracy. Opening is significant among those imperfect effects. This paper reported the study on the resonance frequency perturbation caused by the gas-in and gas-out openings on cylinder resonators based on the first-order acoustic theory approximation. The results showed that an opening shifted the frequeney and the half width as low as △f/f0=-0.14×10-6 and △g/f0=32.11×10-6 for one of the resonances. This paper also investigated the relationship between robe length, opening radius and frequency shift.
Metrology Acoustic resonance Thermodynamic temperature Cylinder resonator Opening perturbation
LIN Hong Keith A.Gillis ZHANG Jin-tao
Heat Division, National Institute of Metrology, Beijing 100013, China Process Measurement Division, National Institute of Standards and Technology (NIST), Maryland 20899,
国际会议
2008年国际温度与热物性测量会议(TEMP BEIJING 2008)
北京
英文
160-164
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）