Cyclone separator with downward exhaust outlet has the flow structure of single swirl flow, and it has lower pressure loss.

下排气旋风分离器具有单旋流流场结构,压力损失低,并能满足循环流化床锅炉π型布置的需要。

Presently, there is only a little achievement in the flow structure of consecutive bends. So the paper researches the problem by systemic experimental study.

本文对于成果还不多见的连续弯道水流结构方面的问题,做了系统的试验研究。

The result shows that when vegetation exists in channel, flow structure is more complex, with abundant whirlpools signifying violent turbulence.

结果表明：水槽中有植被存在时，流场结构较为复杂，充满大量的漩涡，紊动强烈；随着植被刚度的减小，流场结构慢慢趋向稳定。

The further study indicated that the secondary flow structure changes with the various elasticity.

进一步的研究还表明,由于弹性的变化,二次流动结构还会发生很大变化。