出口断面

以MB-II型推移质采样器为例，应用边界层理论，通过计算天然状态及模型率定时采样器出口断面处由边界层引起的相对面积损失，阐明模型试验测得的水力效率较原型偏小的原因。

Taking bedload sampler MB-II as an example , applying boundary layer theory to calculate the comparative area loss caused by boundary layer in field and in model , it is clarified that the hydraulic efficiency measured in scaled model test is less than that in field .

对扩大导流洞出口断面的初步探讨

A Preliminary Approach to Enlarged Outlet Section of a Diversion Tunnel

水工有压隧洞出口断面压强及输水能力的计算

Calculation of Outfall Pressure and Water Carrying Capacity of Hydraulic Tunnel under Pressure

起旋器出口断面流速分布与起旋效率

Outlet cross section velocity distribution and rotation efficiency of spiral pipe flow generator

局部起旋器出口断面流场特性及其能耗的试验研究螺旋装置操纵的起重器。

Experimental Research on the Outlet Characteristics of Flow Field and Energy Consumption of the Local Generator ;

轧辊弹性与热变形的耦合对带钢出口断面的影响

The coupled analysis of elastic deformation and heat crown and its effect on the profile thichness in cold strip rolling

通过研究各机架出口断面不同点的壁厚变化，得出减径后钢管横向壁厚分布不均，探讨了内六方缺陷产生的原因。

It was found that the transverse wall thickness distribution is nonuniform and that is the cause of hexagonal bore formation .

山区小流域是以分水岭和出口断面为界形成的自然集水单元，是具有一定水文学特征的自然、社会和经济综合体。

Mountainous small watershed is a natural catchments as well as a complex system out of the sub-system of ecology , economy and society .

特别是改善了弯道出口断面的水舌厚度和流速横向分布的均匀性，保证了末端挑流消能的稳定性和安全性。

Especially , they improve the water tongue depth and the uniformity of velocity distribution to ensure stability and safety of trajectory energy dissipation .

提出在流道设计时应最大限度地利用流道宽度方向的扩散，以免出口断面的有效面积过多地被旋涡挤占。

It is suggested that the diffusion in the horizontal direction of the conduit should be utilized to restrain the effect of the vortex .

研究还发现，水泵出口断面轴向流速分布均匀度和速度加权平均偏流角也随壁面粗糙度改变而改变。

It is also discovered that the axial velocity distribution and velocity-weighted average swirl angle at the outlet section of axial-flow pump vary with the changing of wall roughness .

研究结果表明，在进、出口断面位置一定的情况下，出水流道存在最优扩散角，使总水力损失最小。

The research results indicate that the passage has the optimum angle of flare which makes its hydraulic loss the least for certain positions of inlet section and exit section .

在所研究的范围内，随着流量的增加，出口断面轴向速度分布均匀度提高，速度加权平均偏流角减小；

Under the scope of the investigation , axial velocity distribution uniformity on the outlet section is improved and the velocity-weighed average bias angle decreases with the increase of flow rate .

神经网络自上世纪80年代就已经在水文预报中得到了应用研究，然而直接由降雨过程来预报流域出口断面水位变化的研究却很少见报道。

Early in 1980 's the neural network has been applied in hydrological forecasting , while there is little research in which the watershed outlet level is predicted only by rainfall input .

降雨径流是由降雨形成的径流，沿地表或地下运动汇入河网并向流域出口断面汇集。

Rainfall runoff is a kind of runoff that is Tableed by rainfall , which joins the river net and merges at the section of the basin through the surface or underground action .

发现出水流道平面方向上的扩散情况较好，而立面方向在出口断面附近则不同程度地存在着旋涡，该旋涡对流道出口断面的流速分布有很明显的影响；

It is found that the diffusion in horizontal direction is better than that along the vertical direction , since vortex is existed . The vortex influences the velocity distribution at the section .

构建了钟形进水流道模型试验装置系统，利用五孔探针测试了不同喇叭口悬空高度时流道出口断面的流速分布，并与数值计算结果进行了比较分析，得出了带泵的流道出口速度分布规律。

The optimization suction open height range was obtained . Constructing model apparatus system of bell-like suction box , the outlet section velocity distribution was measured by probe under various suction open heights .

在理论上对紧凑式轧机坯料的选择，出口断面尺寸的确定以及推力对咬入的作用等方面进行了分析，为制定紧凑式轧机轧制规程提供了依据。

According to the theories , the selecting of billet , determining of exiting cross section size as well as the action of thrust force upon the biting ability were analyzed to provide a basis for laying down the rolling pattern .

土地利用/覆被变化影响雨水的截留、下渗、蒸发等水文要素及其产汇流过程，并进而影响流域出口断面的流量过程，加大流域洪涝灾害发生的频率和强度。

Land use and land cover change influence hydrological factors such as interception , infiltration and evapotranspiration , the progress of water generation and concentration , then affect the discharge at the watershed outlet , and then influence the frequency and degree of flood .

结果表明：入口、出口某断面处实验与模拟值吻合较好，两者的相对误差在1%~3%。

The experiment results agreed well with simulation , and the relative error was 1 % ~ 3 % .

文中基于流场数值计算方法，根据工程实际需要，研究其相应的可视化实现方法，主要内容包括各种函数关系曲线处理、流道出口及任意断面轴向流速可视化及三维计算网格再处理和图形显示等。

Based on flow field computation method , their realized methods were studied according to engineering requirements , including processing all kinds of functional curves , visualization of axial velocity for outlet section and other sections as well as reprocessing and display of 3D computation grids .