旋转气固两相流动与分离数值模拟

NUMERICAL SIMULATION OF GAS-SOLID FLOW AND SEPARATION IN ROTATIONAL FLOW

针对旋转气固两相流分离及其应用问题,研究旋转气固两相流中尘粒的运动特性及分离效率,提出了分离效率的计算式。考虑尘粒间碰撞与并聚、喷水对尘粒间碰撞与并聚的影响,数值模拟研究旋转分离器内气固两相流场、尘粒运动特性及分离效率．研究结果表明分离器结构对流场和压力场有显著影响,且尘粒并聚有利于提高分离效率。

Gas-solid two phase flow and separation efficiency in rotational flow were studied for the application of solid separation by rotational flow, and the separation efficiency expression was carried out. The coalescence and collision among the particles and the influence of water inject were considered. Numerical simulation was used to study the gas-solid two phase flow field, movement characteristics of the particles, and the separation efficiency. The results show that the separator structure has remarkable influence on the flow field and pressure field. The coalescence of the particles can increase the separation efficiency.