head loss

A study on the Calculation Similarity and Analogy of Head loss in thick Slurry Pipe line Transportation

浓煤浆管道输送压力损失计算及相似与模化研究

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Model study on the head loss coefficient of two-stage flap valves

双节拍门水头损失系数模型试验研究

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head loss due to friction

摩擦水头损失

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Based on the test data, head loss equation could be determined by fitting the relationship between friction coefficient and Reynolds number, which would supply parameters for equipment selection and process design.

由试验数据可拟合出摩擦系数和雷诺数的关系，得到水头损失公式，进而为设备选型和工艺设计提供参数。

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as a porous support device has larger opening percentage, the filtering head loss can be greatly reduced.

由于本实用新型的多孔支撑装置开孔率很大，可大大减小过滤水头损失。

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According to the calculation results, circular pipe network could improve the hydraulic conditions, reduce the designed flux and water head loss, and debase the lift of fire protection water pump of wet automatic sprinkler systems.

由计算出来的结果可以看出，环状管网能够改善湿式自动喷水灭火系统的水力条件，减小系统的设计流量与水头损失，降低消防水泵的扬程。

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Flow regime and head loss of two different tailrace systems in hydropower station were investigated.

对两种不同的尾水系统布置方式进行了流态和水头损失的对比分析。

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Head loss of fiber bundle filter bed

纤维束滤床的水头损失

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the airfoil-shaped measuring flume water head loss isn't higher, and the water head losing has 14% of the total head of water.

机翼形量水槽的水头损失不大，水头损失约占上游总水头的14%左右。

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comparison with calculating the coefficient of local head loss models for inverted siphons

倒虹吸有压弯管的局部水头损失系数计算方法比较

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According to current engineering hydrodynamics, there's positively constant head loss in Bernoulli's theorem for identical stream line in viscous fluid, which can later turn into heat and dissipate.

现行工程流体力学与水力学理论通常认为粘性流体元流伯努利方程中的水头损失项是恒正的，并且这部分损失的机械能转变为热而耗散掉了。

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The channel of fire monitor's body is designed spirality. It has compact structure, small volume, low head loss.

消防炮的炮身流道为螺旋形管道设计，结构紧凑，体积小，水力损失少；

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The valve is an impeding part with larger pressure head loss and a lot of discharge energy consumed.

风量调节阀系阻性部件，存在较大的压头损失，须消耗大量送风能量。

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The Newton iteration method is used to solve the economic pressure on the unknown node, so as to calculate the economic head loss and economic pipe diameter of each section, and economic head of second-stage pump station.

采用牛顿迭代法来求解各未知节点的经济水压，进而得出各管段的经济水头损失、经济管径和水源二级泵站的经济扬程。

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Mathematical Model of Head Loss for Pulp Flow in Pipe(ⅱ)

纸浆圆管流动压头损失的数学模型（Ⅱ）

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study on testing water head loss of water pipe by the high-precision pressure difference test meter

高精度压差测量仪测试给水管道水头损失研究

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Drip line head loss has a positive correlation to the distance from the plot entrance. The drip line working status near the entrance of plot varies with the system working pressure.

毛管水头损失与距小区进口处的距离呈正相关；系统工作压力变化时，主要影响小区进口附近毛管的工况。

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There are two side tanks for alternating outlet. Additional settling tank, sludge and mixed liquor recirculation equipment are omitted. This process runs at constant water level with small water head loss. Power consumption is greatly saved because of low power load.

其中有两个边池交替出水，不需要单独设置沉淀池，省却了污泥和混合液回流设备，恒水位运行，水头损失小，装机负荷低，可以大大节省动力消耗。

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The design method of controlling the maximal laying length by using the head loss is discussed.

采用水头损失控制喷水带最大铺设长度的设计方法,将首末端的水头损失限定在30%以内.

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calculation of optimal specific frictional head loss in condensate network

凝结水网经济比摩阻的计算

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Effects of interference between flow and group of piles Experimental Study on Muddy Water Head Loss in Pipeline

群桩阻力损失与桩前冲刷研究关于浑水管道阻力损失规律的试验研究

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this test study pipeline pressure and head loss under each kind of operating mode, also carefully observed and tested the siphonage.

试验模拟了引水系统在各种情况下的压强和水力损失，并对虹吸现象进行了仔细的观察和测试。

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Through analysis, this article points out that how to handle the torque reserve, thrust reserve and speed reserve of the drill rig is the key for the improvement of the utilization ratio and reduction of designed head loss in the hydraulic system.

本文分析指出如何处理液压凿岩钻车的备用扭矩、备用推力和备用速度，是提高液压系统功率利用率，减少设计压力损失的关键。

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the full, round port area provides maximum flow capacity and minimum head loss.

全流道 、 圆形端口截面实现最大流量和最小压力损失.

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error analysis of specific frictional head loss in hot-water heating pipelines

热水供暖管路比摩阻误差分析

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At the same time the sensitivity of bed roughness was calculated due to the coefficient of local head loss with this program and it was found that the coefficient of local head loss has great influence on bed roughness.

同时，也利用本程序计算分析了局部水头损失系数对糙率的敏感度，提出局部水头损失对糙率也有很大的影响。

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The pater applies the head loss model to design a set of computer control system, it can be realized automatic surveillance of deep bed filter process.

同时利用阻力模型设计了一套计算机控制系统，实现了深层过滤过程的自动化监测。

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calculation on head loss of pipeline for water supply project

供水工程管道水头损失计算

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Experimental Study on Muddy Water Head Loss in Pipeline

关于浑水管道阻力损失规律的试验研究

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the experimental research on head loss of two phase gas-liquid flow in the level line

气、液两相流在水平管道中水头损失的实验研究

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