Particle Distribution Measurement of Highly Concentrated Emulsions Based on Ultrasonic Extended Coupled Phase Model

This paper introduces a method for measuring solute particle size in solution. The working principle of this method is to characterize the particle size by using the ultrasonic extended coupled phase model combined with the acoustic attenuation coefficient of the solution. In the ultrasonic detection of highly concentrated emulsion particles, the inter-particle interaction, namely the structural loss, becomes the main factor affecting the ultrasonic attenuation. In this study, micron-sized emulsions with 10, 15, and 20% concentration were experimentally detected by the extended coupled-phase model, and the inverse calculation of the particle size distribution was carried out using a differential evolutionary algorithm. The detection results showed an average error of 4.266% compared with those of laser particle sizer. The results show that ultrasonic detection based on the extended coupled phase model combined with differential evolution inversion algorithm can achieve accurate measurement of particle size distribution of emulsions with high concentration.