圆管螺旋流输沙特性试验研究

Experimental study on sediment transportation of spiral flow in pipes

螺旋流的流速分布有着与普通平直流不同的特点 ;运用圆管螺旋流的特性可以在管道中实现高浓度 ,远距离的泥沙输送。本文在试验的基础上对螺旋管流中的流速分布、泥沙的起动、起旋以及输沙等特性进行了研究 ,同时进行了理论分析 ,探讨了螺旋流高浓度输沙的可能性。

The velocity distribution of spiral flow is different from that of usual pipes;the target with high concentration,long distance sediment transportation can be achieved if the specific property about spiral flow are used in pipes. On the base of experimental study,the flow velocity distribution,the movement and float about sediment,and some specific property are studied in this paper.At the same time,the possibility of sediment transportation with high concentration are studied in spiral flow too.