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1)  cavitation coefficient
空化系数
1.
Three-dimensional numerical simulations by commercial code CFX were conducted to observe the flow patterns and to measure valve flow coefficient,hydrodynamic torque coefficient and cavitation coefficient when butterfly valve with various opening degrees and uniform incoming velocity were used in a piping system.
应用专业流体分析软件CFX对蝶阀中的流体进行了三维模拟分析,并在阀盘处于不同的开启度(即阀盘的开启角度)下,研究了阀门的流动特性如流量系数、水力扭矩系数、空化系数等。
2.
The cavitation coefficient obtained from the simulation results is consistent with the model test.
水轮机叶片上的空化空蚀破坏造成水电站的频繁检修,利用计算流体力学软件Fluent对HL240型水轮机的设计工况进行数值模拟,模拟结果求出的空化系数与模型试验非常吻合。
3.
The cavitation coefficient can affect hydraulic perfonnance of turbine in the fact of effi- cency,output,cavitation,pressure fluctuation,runaway speed and hydraulic axial thrust,and it have badly effect in some operating points.
空化系数对水轮机的效率、出力、空化、压力脉动、飞逸转速及轴向水推力等性能均有一定影响,有的工况影响非常大。
2)  cavitation factor
空化系数
1.
In this paper,it is introduced to the influence of cavitation factor,measurement taps,sampling frequency and sampling time on the test result in pressure fluctuation test of the water turbine.
介绍了水轮机压力脉动试验时空化系数、测量位置及测点、信号采样频率及采样时间等因素对试验结果的影响。
2.
An introduction was given to the influences of some factors on test results about pressure fluctuation performances in pressure fluctuation test of water turbines,the factors including the locations and number of measurement points,sampling frequencies and time,and cavitation factors.
介绍了水轮机压力脉动试验中测量位置、测点数量、信号采样频率及采样时间、空化系数等因素对压力脉动试验结果的影响,并提出在进行压力脉动试验时,应增加测点,延长采样时间,提高采样频率,以避免信号遗漏和信号混叠等现象的发生。
3)  null quantified coefficients
空量化系数
1.
The number of coded bits for each frame can be accurately predicted through the percentage of null quantified coefficients.
264速率控制算法,与其它算法相比,该算法不仅复杂度较低,而且降低了存储空间,每一帧的编码比特数可以通过空量化系数的百分比来准确预测。
4)  critical cavitation coefficient
临界空化系数
1.
Accurate confirmation of hydro-turbine output with critical cavitation coefficient;
利用临界空化系数精确确定水轮机出力
5)  initial cavitation coefficient
初生空化系数
1.
The confirmation of both the critical cavitation coefficient and the initial cavitation coefficient is briefly presented,and the difference between them is introduced as well.
简要介绍了临界空化系数和初生空化系数的确定方式及二者的区别,指出临界空化系数反映空化状态下的能量性能,初生空化系数则只反映空化状况。
6)  plant cavitation coefficient
装置空化系数
补充资料:水泵气蚀(见空化与空蚀)


水泵气蚀(见空化与空蚀)


shuibeng qishi水泵气蚀见空化与空蚀。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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