明渠水流,open channel flow
1)open channel flow明渠水流
1.3-D numerical simulation on overbank steady open channel flows in compound channels;漫滩恒定明渠水流的三维数值模拟
2.Space-time correlations of velocity in open channel flows明渠水流流速的时空相关性
3.In order to investigate the characteristic of open channel flow,a mathematical model is developed to compute the lateral velocity distribution in open channel flow.为了研究明渠水流的运动特性,开展了明渠水流流速横向分布数学模型的研究。
英文短句/例句

1.Liquid flow measurement in open channels-Float-type water level gaugeGB/T11828-1989明渠水流测量浮子式水位计
2.Study on Hydraulics Characteristics of Flow in Open Channel Consecutive Bends连续两弯明渠水流特性水槽试验研究
3.On the Relation between the Velocity and the Concentration Distributions in Open Channel明渠水流垂线流速分布与含沙量分布的关系
4.The Experimental Study on the Flow Characteristics of Open Channel with the Flexible Vegetation;流经柔性植物的明渠水流特性影响试验研究
5.Numerical Simulation of Flow Characteristic at 90-Degree Open-Channel Junction;直角明渠水流交汇流动特性的数值模拟研究
6.Measurement of Flow Field with Submerged Rigid Vegetation by PIV用PIV测量含淹没刚性植物明渠水流流速场
7.Experimental study on sediment deposition in circulation zone of shallow water flows明渠浅水回流区泥沙淤积的试验研究
8.Experimental Investigation on Velocity Distribution of Self-aerated Flows in Development Areas明渠自掺气水流发展区流速分布的试验研究
9.Research on water level and flow cascade feedback control of canal明渠调水工程水位-流量串级反馈控制研究
10.Roughness Coefficient and Turbulent Characteristics for Non-uniform Flow in Open Channels;明渠非均匀流糙率系数及水力特性研究
11.The Research of the Hydraulic Characteristic about Surface Flow of the Open-channel Junction Controlled by Engineering;工程控制下T型明渠交汇口表层水流特性研究
12.Research for Data Monitoring and Management System of Sewage Flow Measuring in Open Channel明渠污水流量计量数据监测管理系统的研究
13.Research on the Data Acuquisition and Processing System of Digital Flow-meter for Open Channal Sewage数字式明渠污水流量计数据采集处理系统研究
14.Experimental study on the behavior of horizontal turbulent side jets in compound open channel with vegetated plain滩地植被化明渠中横向水平射流特性试验研究
15.Design of Monitoring Software of Sewage Flow Measurement System in Open Channel明渠污水智能流量计量系统监测软件设计
16.Drainage is a general term applied to fluid flow along all pipes or open channels which take liquid wastes or rain water.排水是个通用名词,指沿各种废水或雨水管道或明渠流动的液体。
17.Experimental study on hydraulic behaviors of steady uniform flow in open channel with submerged flexible vegetation淹没柔性植被明渠恒定水流水力特性的试验研究
18.Water runs along the channel to the fields.水顺着渠道流进地里。
相关短句/例句

open-ditch sewage flowmeter明渠污水流量计
3)alternate stages of open-channelflow明渠水流更迭段
4)Flow of Water in Open Channels and Pipes《明渠及管道水流》
5)sewage flow in open channel明渠污水流量
6)canal sewage discharge明渠流量
延伸阅读

明渠水流  底面和侧面为固壁而上表面与大气接触的水流。例如河道、渠道以及横断面未充满的管道中的水流等。因为自由表面上的大气压强以相对压强计为零,所以又称为无压流。由于自由表面是可动边界,明渠水流的现象与所涉及的问题均较管流复杂。明渠水流的研究内容包括分析可能发生的各种水流现象、估算输水能力及渠道纵横断面尺寸、确定水位或水深的沿程变化等。    明渠水流可作如下分类:①根据水力要素(水深、流速等)是否随时间变化,明渠水流分为恒定流和非恒定流。严格意义上的恒定流极为少见,通常把水力要素随时间变化很缓慢的情况近似地作为恒定流处理,以使问题简化,例如渠道的水力设计。对于水力要素随时间变化较快的情况,例如天然河道的洪水过程、当水轮机阀门迅速启闭时在电站引水渠中引起的水流波动、入海河口段受潮汐影响的水流等,则应作为非恒定流。②根据流速是否沿程变化,明渠水流还可分为均匀流与非均匀流。前者流速沿程不变,后者则相反。非均匀流又可按流速沿程变化的情况再划分为渐变流和急变流(见明渠恒定非均匀流)。    有时,河渠中除了有沿其轴线方向的流动──主流(又称一次流)以外,在与轴线正交的横断面上还存在流动,称为副流(或二次流)。例如河道弯段的横断面上靠近水面处横向流速指向凹岸,而临近河底处指向凸岸,这样便形成断面环流。弯段上主流与环流叠加而成为螺旋式前进的水流。这对凹、凸两岸的冲刷和淤积甚为重要。    参考书目   清华大学水力学教研室编:《水力学》,修订版,下册,人民教育出版社,北京,1981。   Ven-te Chow, Open-channel Hydraulics,McGraw-Hill,New York,1959.