| 摘要 |
<p>A method for determining an adiabatic compressibility of a fluid in a resonator chamber device (1) comprises the steps of acoustically exciting a sequence of fluid resonances of the fluid in the resonator chamber device (1), measuring of resonance frequency values derived from the fluid resonances, matching a simulation function (y k ) to the resonance frequency values, the simulation function (y k ) including a mass density of the fluid and an ultrasound velocity in the fluid as variables, and determining the mass density of the fluid on the basis of the mass density and the ultrasound velocity of the matched simulation function (y k ), wherein the matching step includes varying the mass density of the fluid included in the simulation function (y k ) until the simulation function (y k ) matches the measured resonance frequency values, and the adiabatic compressibility of the fluid is determined based on the mass density and the ultrasound velocity. Furthermore, a compressibility measurement device is described.</p> |
