梯形断面

梯形断面明渠中纵向离散系数研究

Study on longitudinal dispersion coefficient in open channel trapezoidal cross-section

利用VISUALBASIC6.0（中文版）建立平底棱柱体梯形断面明渠水跃计算的数值方法。

Visual Basic 6.0 ( Chinese visual ) is adopted to build the value counting method for jumping count to flat bottom prism trapezium section open canal .

采用粒子图像测速（PIV）技术和平面激光诱导荧光（PLIF）技术测量了水槽中水流的流场和污染物质扩散输移的浓度场，得到了梯形断面水槽中物质的横向扩散系数。

The water flow velocity and pollutant concentration distributions were measured by a particle image velocimeter ( PIV ) and planar laser induced fluorescence ( PLIF ) to calculate the transverse diffusion coefficient .

目前计算梯形断面明渠临界水深hk的常用方法有试算法、图解法、近似公式法和迭代法，它们存在计算精度不高、求解复杂等缺点。

The traditional methods for computing critical water depth of open channel with trapezoid section ( h k ) are trial and error method , graphic method , approximate solution method and iteration method , whose shortcomings are rough precision , large computation amount and complex resolving problem .

梯形断面水槽中横向扩散系数的实验

Experimental study on transverse diffusion coefficients in an open trapezoidal channel

梯形断面水力计算的一种新方法

A New Method of Hydraulic Calculating About Trapezoidal Cross Section

梯形断面明渠临界水深系统求解

The solution of critical depth system in trapezoid open channel

梯形断面明渠非均匀渐变流水面线计算的数值方法

A Numerical Method for Open & channel Water Surface Profiles of Trapezoid

梯形断面收缩水深计算的迭代法

An Iterative Method Calculating Water Depth at Vena Contracta in Trapezoidal Cross section

水力最佳梯形断面的快速计算方法

A Quick Method for Calculating Hydraulic Best Trapezoid Section

梯形断面明槽中恒定均匀流的流速分布

Velocity Distribution of Steady Uniform Flow in Open Channel with Trapezoid Cross section

平底棱柱体梯形断面明渠水跃计算的数值方法

Value counting method for jumping count to flat bottom prism trapezium section open canal

底部含圆弧的梯形断面防渗渠道的水力计算

Hydraulic Calculation of Seepage Control Canal with Cross Section of Trapezium with Circular-arc Bottom

梯形断面小桥过水淹没标准和孔径计算方法的研究

Research on submergence criterion of discharge of small bridge with trapezoid section and calculation method of the aperture size

本文将明渠及其上游的堰闸视为一个水力系统，然后研究梯形断面明渠过流能力的可靠性。

The reliability analysis on capacity of a trapezoidal open channel which with its upstream weir of sluices is taken to be a series connecting hydraulic system is given in this paper .

在应用计算机辅助设计技术进行离心泵的三维实体设计中，离心泵扩散管是由梯形断面到圆形断面过渡的不规则曲面，必须建立设计扩散管的数学模型。

As centrifugal pump diffuser has irregular curved surface which transits from trapezoidal section to circular cross section , when using computer aided design technology to carry through the integrated design of centrifugal pumps , mathematical model of the diffuser needed to be built .

在原梯形断面蓄水沟的基础上增设一个台阶，并将植物幼苗种植于台阶上，大大改善了植物幼苗的水肥条件，提高了成活率和生长速度。

A terraced gutter is a original stair Surface gutter to store water on which a terrace has been added , and plant sprouts grow on the terrace , that greatly change the water and fertilizer condition of sprouts , and raise the live rate and growing speed of sprouts .

U形及弧形底梯形渠道断面水力计算的搜索法与程序

Searching Algorithm And Program for Hydraulic Calculation of Cross Section of U-shaped And Trapezoidal Channel with Arc Bottom

梯形渠道断面流速分布规律及测流技术试验研究

Study of Velocity Profile and Measure Technology in Open Channel of Trapezoid Cross-Section

并通过算例比较证实，复合断面水力最佳断面的面积和水面宽度比梯形水力最佳断面的小。

It is shown that the optimal hydraulic section for compound canal has smaller section area and narrower breadth of water surface than trapezoidal canal by calculation and comparison .

用有限元方法对液压传动中异形断面&等腰三角形、梯形和矩形断面流道进行数值模拟.获得了不同流动条件下的流场；

The finite element method is employed to simulate numerically the non-circular cross section ducts , Such as the equilateral , terrace and rectangular cross section conduits used in hydraulic transmission .

弧底梯形明渠水力最佳断面设计

Optimum Hydraulic Section Design for Open Trapezoid Channels with Curved Bottom

梯形渠道水力最优断面设计方法研究

Study on the Designing of Hydraulic Optimum Section of Trapezoid Channel

梯形渠道水力最佳断面参数的快速确定方法

Rapid Determining Method for optimal section of trapezoid open canal

田间梯形衬砌渠道纵横断面优化设计

Optimal Design of trapezoidal Lined Canal sections