迷宫流道沿程水头损失试验研究

Computational Experiments on Frictional Head Loss in Labyrinth Channel

迷宫流道由于其结构本身的特点,其水流的水头损失以局部水头损失为主,但目前对于沿程水头损失占总水头损失的比例却没有统一的结论。针对以上问题对梯形迷宫流道及齿形迷宫流道内的水流沿程水头损失进行了物理模型试验。结果表明:梯形45°,梯形60°,齿形45°及齿形60°迷宫流道内水流沿程水头损失占总水头损失的比例分别保持在8.1%左右、14.9%左右、2.1%左右及2.9%左右。

The main head loss in labyrinth channel is local head loss,which is caused by its structural characteristics.However,there is no consensus on the proportion of total head loss that frictional head loss accounts for up to now.In order to analyze the proportion of total head loss in Labyrinth Channel,which the frictional head loss accounts for,the frictional head loss in trapezoidal and dental shape labyrinth channel was analyzed by physical model test.The results show that the frictional head loss accounts for 8.1%,14.9%,2.1% and 2.9% of total head loss in 45° trapezoidal labyrinth channel,60° trapezoidal labyrinth channel,45° dental shape labyrinth channel and 60° dental shape labyrinth channel,respectively.