比转数和汽蚀比转数的统一定义和公式Unified Definitions and Unified Formulars for Specific Speed and Cavitation Specific Speed
孙寿
Sun Shou;
摘要(Abstract)：
本文提出了比转数和汽蚀比转数的统一定义,并推导和推荐了相应的计算公式。采用本文的公式,即使各国单位不同,只要流量Q、扬程H、临界汽蚀余量NPSHc和重力加速度g的单位在计算时一致(转数n的单位各国相同),则对某一台泵所得的数值就会各国相同,因而可克服目前各国数值不同的弊病。
This paper presents the unified definitions of specific speed and cavitation specific speed and derives their respective formulas. Only if the units Q, H, NPSH. and g are used consistantly throughout the calculation (the unit n is the same throughout the world), these two values for the same pump will always he the same, so that the drawback thatthey are not same in different country will be overcome.
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作者(Authors):
孙寿
Sun Shou;