高浓度颗粒两相流中的颗粒粒径分布，浓度等参数的检测，在能源利用、新材料制备、化工检测、医药和食品生产等很多行业中具有重要应用背景和科学意义。超声在颗粒两相流测量中具有安全、非接触、高穿透、耐污染、测量范围广、在线测量等诸多优点，正日益得到广泛关注和应用。但现有超声测量理论模型在很多两相流测量情形已显现出局限性，甚至成为该方法应用的瓶颈。本申请关注超声波颗粒两相流中的理论和建模问题，提出并拟研究一种基于蒙特卡罗原理的颗粒两相流声衰减预测方法，其可以适用于高浓度条件下的非球形和混合颗粒体系(液固，液液，气液颗粒两相流)，并可以考虑不同的声源、声场等实验条件。该项目的研究最终有望形成一套完整的对于颗粒两相流进行测量理论和具有自主知识产权的方法。

The measurement of the parameters particle size distribution, concentration in high concentrated in particulate two-phase flow has shown important applications and scientific research significance in the fields of energy utilization, manufacture of new materials, chemical testing, pharmaceutical and food production, and many other industries. As an approach of particle two-phase flow measurement, ultrasound has possessed many advantages like safe, non-contact, high penetration, resistance of pollution, wide measurement range, on-line measurement, increasingly gain widespread attention and applications. However, the existing ultrasonic measuring theoretical models have obvious limitations in Many the case of two-phase flow measurement, and even become the bottleneck of the application of the method. This proposal concerns the ultrasonic particle theory and modeling for two-phase flow measurement problem, and intends to study an acoustic attenuation prediction method based on the principle of Monte Carlo in particle two-phase flow, which can be applied to high concentrations of non-spherical and mixed particle system (liquid-solid, liquid-liquid, gas-liquid two-phase flow particles) and may cover different experimental conditions like the sound source, sound field, etc. The research project is expected to eventually form a complete set of measurement theory on particle two-phase flow measurement and a method with independent intellectual property rights.