Flow friction calculation is one of the basic problems of two phase flow in tubes.
摩擦阻力计算是管内两相流动中的一个基本问题。
The flow friction coefficient increases with the increase of the cooling air Reynolds number and decreases with the rotating Reynolds number.
阻力系数随旋转雷诺数的增大而减小，随冷气雷诺数的增大而增大。
In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.
在10,000 ~ 90,000的高雷诺数范围内，测量了流动摩擦系数、局部和平均对流换热系数。
Experimental results showed that the effective pressure distribution of the exit section was different and the flow friction decreased due to the influence of film bleeding.
结果表明：通道出口段存在气膜出流与无气膜出流情况相比出口段有效压力分布发生变化，并且使整个通道的流阻下降。
Effects of the geometric structure and thermal conductivity of the louvered fins on heat transfer and air flow friction in the radiators are evaluated in virtue of the computation program.
运用所编程序分析了散热器结构参数与材质对散热器流动阻力与散热性能的影响。
This work combined the heat transfer with flow friction to analyse the comprehensive utilization of energy and established the dimensionless equation, which can analyse the influence of structure par…
依此探讨管束换热过程特征参数对综合能量利用性能的影响，指导翅片管加热器能量的高效利用，并与光管加热器进行了比较分析。
"Some decades ago, the glacier was sitting on this ridge and the friction of the ridge was restraining the flow of the glacier," he explained.
“几十年前，冰川坐落在这道海脊上，其摩擦力阻止了冰川流动，”他解释道。
Our digital communication network has been engineered so that copies flow with as little friction as possible.
我们的数字通信网络被打造成让拷贝流尽量畅通无阻。
Low friction-the coefficient of friction between the chip and tool should be low. This would allow for lower wear rates and better chip flow.
低摩擦系数—切屑与刀具间的摩擦系数应当较低。这会使磨损率较小及切屑流动更好。
The calculation results showed that the friction factor and apparent viscosity of hydrate slurries increase with increasing pressure and flow rate.
计算结果表明，压力高和液体流量大的体系，其摩擦阻力系数和表观粘度值均较高。
An additive used in a fluid to improve its flow. Friction reducer are often made of polymer or resin material that forms a slick surface on solids.
为改善流体的流动在流体中所使用的添加剂。减阻剂常由聚合物或树脂材料制成，这些材料在固体颗粒上形成光滑的表面。
Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
管道摩擦力是指由管道引起的流动阻力，作为一个常用原则，最好是使用最大的实用的管道尺寸以避免在水泵性能方面的损失。
Effects of eccentricity and rotation on the secondary flow and maximal axial velocity were analyzed, and the average friction factors and the wall friction distributions were also presented.
分析了偏心距和旋转对于二次流以及轴向速度分布的影响，同时给出了平均摩擦系数和壁面摩擦力的分布。
Can start the flow of contacts and dynamic friction resistance is to minimize the friction resistance, it can save energy, easy to get a higher velocity.
由于流动接触可使起动磨擦阻力及动磨擦阻力为极小，因此可以节省能源，容易得到较高运动速度。
With the pressure released, there is no friction at work in the clutch, and the power flow is therefore interrupted.
随着压力的减小，离合器工作状态下的摩擦力消失，动力被切断。
The temperature change is caused by the friction in the container and the flow stress of the aluminum.
在压缸内的摩擦力和铝锭的流变应力引起温度变化。
We analyze the effects of the flow parameters and the geometrical parameters on the axial flow, the secondary flow and the friction.
分析了各种流动参数和几何参数对轴向速度、二次流动、壁面摩擦力、摩擦系数比的影响。
The friction and convective heat transfer of single phase water flow in a vertical heated tube at natural circulation condition were experimentally investigated.
以常压去离子水为工质，对自然循环工况下上升加热段内单相水的摩擦阻力及对流传热特性进行了实验研究。
While fluids flow through a pipe, dynamics loses because of the surface friction of pipe.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
But the theory about the flow regime of the wave boundary layer, the wave friction factor, the bed shear stress and the initiation of sediment motion has not developed very well.
而且波浪是海岸地区一个非常重要的海洋水动力因素，波浪作用下底部边界层的流态、底摩阻系数、床面剪应力和泥沙起动的理论还不成熟。
Developed wellbore transient flow model and friction calculating method for the sand mixed fluids effected by propant.
建立了井筒不稳定流动模型，提出了支撑剂影响下的混砂液摩阻计算方法。
The variation of local friction coefficient is similar to velocity and local minimum value occurred in reverse flow area.
摩擦阻力的变化趋势与速度类似，在产生逆向流处出现局部极小值。
The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.
文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。
The theoretical calibration curves for friction of plastic working was plotted and the exact position of the neutral layer of plastic flow was given in the solution.
进而采用该解绘制塑性加工中测量摩擦系数的理论校准曲线。
The metal flow rule of the expandable tubular is closely related with the friction coefficient and extent of expansion.
膨胀套管在膨胀时的金属流动情况与磨擦系数和膨胀幅度密切相关。
The traditional quasi - steady friction model can not be accurately described the real transient problems in transient pipe flow.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
Structures of the skin friction lines (SFL) appearing on a prolate spheroid in laminar and turbulent flows were investigated and compared by using an improved oil-flow visualization technique.
用改进的油流显示法研究和对比了层流和湍流状态下绕椭球流动的表面摩擦力线结构。
The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate friction losses in transients.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
Because of the complexity of turbulent flow, it is a tough issue to determine its friction factor.
鉴于紊流运动的复杂性，其沿程阻力系数确定起来较为困难。
Because of the complexity of turbulent flow, it is a tough issue to determine its friction factor.
鉴于紊流运动的复杂性，其沿程阻力系数确定起来较为困难。
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