That is first to calculate the necessary impeller diameter and rpm, and then to choose a standard impeller which is greater than the necessary one.
在选取轴流式通风机的叶轮直径和转速时，为保证风机消耗的轴功率最小，分析了轴功率的各种影响因素，依据最小轴功率原则和风机经济工作条件，总结出从同类型轴流式通风机中，选择所耗轴功率最小的风机叶轮直径和转速的方法，即首先计算必需的叶轮直径和转速，实际选择时，再取大于必需值的标准叶轮直径和转速。
After cutting the impeller diameter for three times, obtains appropriate diameters.
针对某工程空调水系统调试中发现的冷却水泵匹配电机偏小的问题,经计算分析认为,降低水泵扬程3~4 m可以保证水泵安全运行,采用切割叶轮的方法,三次调整叶轮切割尺寸,得到合适的叶轮直径。
Three dimensional finite element analysis of radial-flow impeller′s static and dynamic characteristics;
径流叶轮静态和固有频率的三维有限元分析
Influence of Pump Impeller Diameter on the Hydraulic Characteristics of Low Head Pump System
水泵叶轮直径对低扬程泵装置水力性能的影响
The Influence of Pump Impeller Diameter on the Hydraulic Performance of Low Lift Vertical Flow Pump System;
叶轮直径对低扬程立式轴流泵装置水力性能的影响
Research on Side Mill Way Planning Algorithm of Centrifugal Impeller Blade Ruled Surface
离心叶轮直纹叶片侧铣路径规划算法研究
bead diameter at rim seat of cycle tyre
力车轮胎胎圈着合直径
SMALLER DIAMETER OF PIVOT BEARING
轮毂轴承的较小直径端
CFD analysis on effects of impeller outlet diameter on flow field in centrifugal pump
叶轮外径对离心泵内流影响的CFD分析
The Calculation of Mi ddleman Expansion Dimension in Straight-plate Blades Impeller of Centrifugal Fan
离心通风机直板叶片叶轮中盘展开尺寸的计算
a turbine that is driven by jets direct against the blades.
喷气机直接对准浆叶驱动的涡轮。
fixed impeller straight through cyclone
固定叶轮直通式旋风分离器
On Study of Aerodynamic Performance of the Vertical-Axis Wind Turbine Rotor;
垂直轴风机叶轮空气动力学性能研究
The Research of Rolling-wheel-measuring-head Calibration Method for the Measuring System of Large Diameter
大直径滚轮测量系统滚轮测头标定方法研究
It introduces a new kind of generating method of non-equidistant curves.
提出了直纹面叶轮叶片非等距轮廓线的生成方法。
The linear speed of ratio of a pulley is in proportion to its diameter.
滑轮的线速度比率与它的直径成正比。
Flat belt drive pulleys diameters
GB/T11358-1989平带传动带轮直径尺寸
Method of Calculating Three Cone Bit Diameter by Using Excel
用Excel实现三牙轮钻头直径计算的方法
The effective diameter of the motor pulley is obtained by subtracting 5 mm from the outer diameter.
马达皮带轮的有效直径为外径减5mm 的数值。
Numerical Research on the 3-D Complex Viscous Flow in Radial Turbo-machinery;
径流式叶轮机械三维复杂流动的数值研究
Numerical Simulation of Pressure Fluctuation and Radial Force in a Double Volute Pump
双蜗壳泵压力脉动特性及叶轮径向力数值模拟