Abstract Two-phase flows of gas and particles are often encountered in the transport system of pipelines in various industrial applications. A brake valve is usually employed to control the transport process of two-phase flows. In case fine solid particles collide with the valve system or the wall surface of pipeline, surface erosion occurs, which affects the performance of the valve as well as its durability, leading to the deterioration of the efficiency of transport system. In the present study, experimental study has been made for the purpose of optimization of the brake valve under the two-phase flow of gas and particles. A model brake valve has been fabricated and its valve opening degree, the particle diameter, and the particle mass flow rate were varied to investigate the particle-gas flows through the valve and the resulting erosion characteristics. Particle accumulation layers along wall surface were also observed and discussed in detail.

中文翻译：

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气体颗粒两相流通过模型制动阀的实验研究

摘要 在各种工业应用的管道输送系统中，经常会遇到气体和颗粒的两相流。制动阀通常用于控制两相流的输送过程。当细小的固体颗粒与阀门系统或管道壁面碰撞时，会发生表面侵蚀，影响阀门的性能和耐用性，导致输送系统效率下降。在本研究中，为了优化气体和颗粒两相流下的制动阀，进行了实验研究。制作了一个模型制动阀，其阀开度、粒径、并且改变颗粒质量流速以研究通过阀门的颗粒气体流动和由此产生的侵蚀特性。还观察并详细讨论了沿壁表面的颗粒堆积层。