velocity head coefficient

The peak flood volume of the section was calculated through analysis of surface velocity efficient,the calculating error was analysed.

嫩江江桥站１９９８年８月特大洪水发生决口，通过分析水面流速系数，推算决口情况下主槽和决口处的洪峰流量，并进行误差分析。

The calculation formulas for velocity coefficients φ_2 and φ_5 for the throat and throat inlet section were deduced from the theoretical research on the velocity coefficients in time-averaged basic equations by use of the unsteady momentum equation and time-averaged value calculation method.

运用非恒定的动量方程和时均值计算方法,对脉冲液体射流泵时均值基本方程中的流速系数进行了理论研究,推导出了喉管和喉管进口段流速系数φ2和φ5的计算式。

The main parameter in this study is velocity coefficient φof a stepped spillway.

基于模型试验,研究了阶梯溢流面的流速系数影响流速系数的主要因素为单宽流量q、阶梯的高度h和溢流面的高度P定义了一个无量纲参数———跌落数Dr=q/gd√研究了阶梯面坡度l/d对流速系数的影响,给出了经验计算公

Combined with the actual works of flow measuring and relevant provisions,taking several sections of Main Canal of Linghua,Huaiyuan,the headworks of North Main Canal and South Main Canal for example,from the determination of sections for flow measuring,layout of measuring line and other aspects,the general determination methods of the velocity coefficient of slop were discussed.

结合测流工作实际和有关规定,以总干灵化、槐原、北干渠首、南干渠首等具有代表性的几个断面为例,分别从测流断面的确定、测线布设等诸多方面阐述了边坡部分流速系数的一般确定方法,进而对现行采用的实验室所得来流速系数进行了修正,提出了不同断面应该采用不同边坡部分流速系数的观点,为合理调水、准确计算水量提供了切合实际的科学依据。

Determination of the Velcocity Coefficient of Slop in the Flow Measuring in the Main Canal of Fengjiashan

冯家山干渠测流中边坡部分流速系数的确定

The Humidity Effect on the Discharge Coefficient of Sonic Nozzles

湿度对音速喷嘴流出系数影响的研究

Analysis on Water Flow Velocity's Influence on Heat-transfer Coefficient of Air Cooling Coil

水流速对表冷器传热系数影响的分析

Numerical Simulation of High Speed Flow Field Around Ejection System

弹射座椅系统外高速流场的数值模拟

The Digital Thyrisor Double Loop DC Speed Ragulating System's Designing Process

数字式晶闸管双环直流调速系统设计

Design and Realization of DC Motor Digital Speed Modulation Experimental System

数字化直流调速实验系统设计与实现

Design and Implement of Fowing Velocity and Temperature Data Acquisition System

流速温度数据采集系统的设计与实现

ADJUSTABLE SPEED SYSTEM OF DDC USING THYRISTOR FOR D.C. MOTOR

直接数字控制可控硅直流电动机调速系统

Sutdy of Digital Timing System of Reversed Direct Current Based on ARM;

基于ARM的全数字可逆直流调速系统的研究

Design of Digital Intelligent Dc Speed Reguating System;

智能全数字直流调速系统理论研究与设计

Identification of Heat Exchange Coefficient of the Arctic Sea Ice and Computation of Two-Dimensional Velocity of Flow;

北极海冰热交换系数的辨识与二维流速的计算

Study and Application of Data Stream Processing System over High-speed Networks;

面向高速网络的数据流处理系统研究与应用

Digital PWM Speed Regulation System for DC Motor and Its Fuzzy Control Algorithm;

全数字直流脉宽调速系统及其模糊控制算法

Design and Realization of Fully-digital PWM DC Motor Speed Regulation and Servo System;

全数字直流脉宽调速与伺服系统的设计与实现

The Application about Full-digital DC Speed-regulating System in Rolling Technology;

全数字直流调速系统在轧制工艺过程中的应用

On DC Speed Control System of Self-Regulating PI Parameter;

自调整PI参数的直流调速系统研究及仿真

IDS of Vehicles in Expressway;

高速公路交通流量数据采集系统的研究

Digital Controlling System For Direct Current Timing With Modularize Structure;

模块化结构控制的全数字直流调速系统