Modelling of Acoustic Impedance Transfer Function for Liquids Subjected to a Centrifugation Process

摘要

During the sedimentation process, the acoustic impedance transfer function of the liquids through which the pulse propagates has variable acoustic impedance. This acoustic impedance that characterizes a liquid during centrifugation is determined by the pulse-echo configuration results in conjunction with the subsequent experimental results. The system transfer function obtained in this fashion has been shown to agree with a direct measurement of the same function in a reference set-up. Based on laboratory experiments and the derived model, determination of separation efficiency with a high accuracy range of measurements is produced. The value of having a model of this type for a complete system is that one can then examine in detail how changes in the transfer function of the medium affect the system performance; estimates of the effects of system changes can also be made without performing costly experimental validation studies.