specific speed

This text introduce the following turbines parameter select and calculate of the Liujinba water power station: the specific speed, unit discharge, unit speed, the high degree of suck out etc.

介绍了留金坝水电站灯泡贯流式水轮机参数：比转速、单位流量、单位转速、吸出高度等的选择与计算。

With the analysis of forming mechanism of the actual Quantity-Head curve of centrifugal pump, the relation of slope and hump of theoretical Quantity-Head curve of centrifugal pump was derived mathematically, and the relation of specific speed and curve slope was presented.

分析了离心泵实际流量扬程曲线的形成过程，数学推导了理论流量扬程曲线斜率与驼峰的关系，提出了比转速与斜率大小的关系曲线。

Numerical Simulation and Configurable Optimization in Partial Emission Pump Numerical Simulation of Interior Flow for High Specific Speed Mixed-flow Pump Designed by Constant Circulation flow Pattern

部分流泵内部流场模拟及结构优化设计等环量流型高比转速混流泵内部流场数值模拟

DESIGN AND EXPERIMENT OF HIGH SPECIFIC SPEED VOLUTE MIXED FLOW PUMP Measurement of Hydraulic Losses in Volute Casing of a Reversible Pump-Turbine under Pumping Mode

高比转数蜗壳式混流泵的设计与研究混流可逆式水泵-水轮机泵工况蜗壳损失试验研究

The main hydraulic problem for low specific speed centrifugal pumps namely lower efficiency, drooping head-flow curve and easily overloading brake horsepower are introduced and the fundamental requirements for modern hydraulic design are discussed.

介绍了低比速离心泵在水力性能方面存在的主要问题，即效率低、易产生驼峰和易过载，讨论了现代水力设计的基本要求。

An ultimate specific speed method checked by formula of manufacturer is proposed.

提出用极限比速法,并采用厂家公式校核的方法选取冲击式机组.

Research and Development of Backward Centrifugal Fan with Low Specific Speed

特小比转数的后向离心通风机的研究与开发

This paper presents the major parameters of hydraulic turbines one by one, such as rated head, specific rotating speed and specific speed coefficients, unit flow, unit speed, cavitation coefficient, efficiency, stability etc.

对构皮滩水电站水轮机的额定水头、比转速及比速系数、单位流量、单位转速、空化系数、效率、稳定性等逐一进行论述，介绍了基本参数和参数水平。

Geometric formation method of short blades on compound impeller of high-speed centrifugal pump with super-low specific speed

超低比转速高速离心泵复合叶轮短叶片的几何造型方法

Application of reaction factor in optimizing geometries of low specific speed impellers

反击系数在低比转速叶轮几何参数优化中的应用

Hydraulic Optimization Design of Low Specific Speed Turbine Runner of N-J Project in Pakistan

巴基斯坦N-J项目低比转速水轮机转轮水力优化设计

Study on the Basic Characteristics of Specific Speed of Table Tennis Players

关于乒乓球运动员专项速度基本特征的研究

Numerical Simulation of Interior Flow for High Specific Speed Mixed-flow Pump Designed by Constant Circulation flow Pattern

珠江口海域设计流速模型模拟推算方法等环量流型高比转速混流泵内部流场数值模拟

Numerical Simulation of Interior Flow for High Specific Speed Mixed-flow Pump Designed by Constant Circulation flow Pattern Numerical simulation of low NO_X pulverized-coal burners in same velocity of two channels in utility boilers

等环量流型高比转速混流泵内部流场数值模拟电站锅炉应用等速型低NO X燃烧器的数值模拟

It is resolved that design condition efficiency for low specific speed centrifugal pump is not the highest in terms of experiential statistical area ration value.

解决泵行业一直依据经验统计值确定面积比而不能使低比转速离心泵在设计点效率最高这一问题。

Based the brake horsepower characteristics of low specific speed centrifugal pump and the required features of pumps used for agriculture, the concept of non-overload centrifugal pumps is conceived.

针对农用泵（运行工况多变且出口无流量调节阀）的特点和低比转速离心泵的轴功率在大流量区运行易过载的特性，提出了无过载离心泵的概念。

Development of High Efficiency Volute Pump of Very Low Specific Speed

低比转数高效率蜗壳泵的开发

Numerical calculation of unsteady flow of viscoelastic fluid in eccentric annulus Numerical Simulation of Interior Flow for High Specific Speed Mixed-flow Pump Designed by Constant Circulation flow Pattern

黏弹性流体在偏心环空中非定常流的流量计算等环量流型高比转速混流泵内部流场数值模拟