The results show that compared to the cold flow, it is found that the width of the reverse flow zone is bigger, and the reverse flow velocity increases; 结果表明,与冷态流场相比,燃烧状况下流场的回流区宽度增加,回流速度明显增大;
Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall. 受喷嘴区高速射流的影响,喷嘴上方固体颗粒呈向下流动趋势,形成一个诱导回流区域。
The reverse flow zone broadening factor, h, of benzene is somewhat larger than the straight through flow zone broadening factor, h '. 苯的逆流峰加宽因子h稍大于直流峰加宽因子h′。
Analysis of the measurement result showed that under small discharge operating condition, the unsteady characteristic of the flow in the cone tube draft was evident and there existed obvious reverse flow in the centre zone of the draft cone tube and swirls near the tube wall. 结果表明:在小流量工况下,尾水管锥管内的瞬态流场呈现出明显的非定常特征,锥管中心处存在明显的回流,管壁处存在涡流;