多岔管局部水头损失系数的确定

Finalization of Local Head Loss Coefficient of Multi-furcated Penstocks

为了确定多岔管道局部水头损失系数ζ,采用Fluent软件研究了五岔管局部的流速场分布,进而建立h_j^v^2/2g线性关系,从而得到各岔管局部水头损失系数ζ。计算成果与物理模型试验吻合良好,表明该数值模拟方法可用于其他异形体型局部水头损失系数ζ的确定。

To determine the local head loss coefficient ζ of multi-furcated penstocks,the Fluent software is applied to study the local velocity field distribution of the quintuple-furcated penstock and furthermore the linear relation of h_j^v^2/2g is built. Finally,the local head loss coefficient ζ of multi-furcated penstocks. The calculation achievements are well fitted the physical model tests. This proves that the numerical simulation is applicable to determination of local head loss coefficient ζ of other abnormal outlines.