【摘要】 为给某含能材料制备中微反应器的混合强化提供技术依据，在惰性气体扰动和超声作用下，通过实验测定了微反应器内基于Villermaux-Dushman反应的离集指数，比较了不同气液入口速度、气液比与超声功率下微反应器的混合性能。此外，通过计算流体力学方法，耦合流体流动、化学反应、两相流-相场、压力声学等物理场，模拟研究了气液比、超声功率等工艺条件对Villermaux-Dushman反应离集指数的影响，讨论了气液两相反应体系的强化机理和流型转变点。研究结果可为气液两相流微反应器的优化设计提供参考。更多还原

【Abstract】 In order to provide technical guidance for mixing intensification of high energetic material preparation in microreactors, effects of inert gas and ultrasound were studied to determine the segregation index of VillermauxDushman reaction, and the mixing performance of the microreactors was assessed under different gas-liquid inlet velocities, gas-liquid ratios, and ultrasonic field intensities. Furthermore, computational fluid dynamics methods were employed to couple fluid flow, chemical reactions, two-phase flow-field, and pressure acoustics to numerically investigate the effects of gas-liquid ratio and ultrasonic power on the segregation index of Villermaux-Dushman reaction. The mechanism of intensification of gas-liquid two phase reaction systems and flow regime transition point were elucidated. The research results can contribute to the design optimization of gas-liquid two-phase flow microreactors.更多还原