Ulteriorly, considering the local head loss in inlet opening and pipes junction plays more important role in the calculative results of water hammer pressure calculation of the short pipeline system.
考虑进口及多管道连接处的局部水头损失对短管道系统水击压强的计算结果影响较大。
In order to make optimal operation calculation of small hydroplant more accurate and rational, head loss of hydroelectric plant with complex diversion system is analyzed in this paper.
为了使小型水电站厂内优化运行计算的结果更趋准确、合理，对具有复杂引水系统的小型水电站引水损失情况进行了分析。
There are four emphases in -research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.
研究重点主要集中在管内流动状态、浓度和速度分布、临界流速及阻力损失计算四个方面。
Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.
对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。
However, For pipes with local resistance loss, the friction head loss caused by the viscosity of fluid does exist, which may lead to the calculation error.
但是在形成局部阻力损失的管段中，还会同时伴随产生由于液体的粘性力引起的漩程水头损失，这就造成了这项损失的计算误差。
The calculation of local head loss in a pressured curved tube is very important for the design of the construction of inverted siphon.
有压弯管局部水头损失计算在倒虹吸等过水建筑物设计中至关重要。
This paper mainly points at produced bigger deviation problem when apply formulas about the hydraulic calculation of DIP in recent years, and analyses some common formulas about head-loss.
本文主要针对近年来普遍使用的球墨铸铁管在套用已有的水力计算公式进行计算时产生偏差较大的问题，对常用的几个水头损失计算公式进行了一些分析。
This paper mainly points at produced bigger deviation problem when apply formulas about the hydraulic calculation of DIP in recent years, and analyses some common formulas about head-loss.
本文主要针对近年来普遍使用的球墨铸铁管在套用已有的水力计算公式进行计算时产生偏差较大的问题，对常用的几个水头损失计算公式进行了一些分析。
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