摘要：建立了FW-Φ150型强制涡卧式涡轮分级机内腔叶片之间气-固两相流的双流体理论模型熏并利用通用的流体力学计算软件进行了数值模拟。结果表明:该涡轮分级机在正常工作状态时,内腔流场遵循强湍流流动规律;粒子群的运动规律是,粒子的粒径越大,越易向叶片外边缘聚集,直至返回分级区;随着转速的增大,流场的涡流现象越来越强,相同粒径的粒子,当转速增大到一定的程度时,出现了反流现象,使已经分离出的细粒又返回到分级区,而影响分级机的分级效率。

关键词：涡轮分级机;气-固两相流;数值模拟;

Abstract: The theoretical model of the gas/solid two-phase flow field be-tween the two blades in the inner cavity of the FW-Φ 150 compelling vor-tex horizontal turbine superfine classifier is set up and the all-purposeCFD code is used to simulate it numerically. The result shows that whenthe classifier is in normal working state, the inner cavity flow field obeysthe rule of intense turbulent flow; the moving rule of particle groups is thatthe bigger the particle diameter is, the easier it is to congregate to the ex-terior brink of the blades till they come back to the classification district.With the increase of the rotate speed, the whirhool in the flow field is moreand more violent; when the rotate speed increases to certain extent, thecountercurrent phenomenon of the particles with the same diameter ap-pears, which makes the separated granules come back to the classificationdistrict and influences the classification efficiency of the turbine classifi.er.

Key words: turbine classifier; gas/solid two-phase flow; numerical sim-ulation