Particle Size Measurement of Liquid–Solid Two-Phase Media Using Multifrequency Ultrasound Array
Particle Size Measurement of Liquid–Solid Two-Phase Media Using Multifrequency Ultrasound Array
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DOI：
10.1109/tim.2023.3303529
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发表时间：
2023
影响因子：
5.6
通讯作者：
Wenxiu Hou;C. Tan;Hanrui Zhang;Feng Dong
中科院分区：
文献类型：
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作者：
Wenxiu Hou;C. Tan;Hanrui Zhang;Feng Dong
粒度是工业过程的重要参数。超声法可以获得具有多频衰减特性的颗粒粒度分布。然而，传统的双换能器测量模式中的声路径不能覆盖整个测量区域，并且不均匀分布影响测量结果。因此，提出了一种具有多个声学路径的超声阵列策略来消除该缺点。结合McClements和Bouguer-Lambert-Beer定律（BLBL）的混合超声衰减模型被用来描述不同的衰减机制。采用改进的粒子群优化算法求解PSD，仿真结果验证了该算法的有效性。建立了液固两相流测量装置，并进行了实验研究。PSD测量结果与光学测量结果一致，与传统的一对换能器测量相比，使用超声阵列方法的测量精度得到提高。结合不同声程的PSD测量结果，可以表征测量区域的颗粒分布，从而进一步捕捉混合过程的流动行为。
Particle size is an essential parameter for industrial processes. The ultrasound method can acquire the particle size distribution (PSD) with multifrequency attenuation characteristics. However, the acoustic path in the traditional measurement mode with a pair of transducers cannot cover the whole measurement zone, and the heterogeneous distribution affects the measurement results. Hence, an ultrasound array strategy with multiple acoustic paths is proposed to eliminate the disadvantage. A hybrid ultrasound attenuation model combining McClements and Bouguer–Lambert–Beer Law (BLBL) is adopted to describe the different attenuation mechanisms. The PSD is obtained with an improved particle swarm optimization (PSO) algorithm, and the efficiency of the proposed PSD inversion algorithm is verified by the simulations. A liquid–solid two-phase measurement device is built for the experimental investigation. The PSD measurements show agreement with the optical measurement results, and the measurement accuracy using the ultrasound array method is improved compared to the traditional one-pair transducer measurement. Combining the PSD measurements of different acoustic paths, the particle distribution of the measurement zone is characterized, and the flow behaviors of the mixing process can be further captured.