试析毛细管黏度计的原理

A Tentative Analysis on the Principle of Capillary Tube Viscometer

论证表明,泊肃叶定律不适用于直立式毛细管黏度计。因此不能用泊肃叶定律推导直立式毛细管黏度计测定液体黏度的计算公式。泊肃叶定律只能用于推导水平毛细管黏度计测定液体黏度的计算公式。论文阐明用推广的泊肃叶定律推导出浅池直立式和深池直立式毛细管黏度计测定液体黏度的计算公式,纠正了长期以来用泊肃叶定律推导中的错误。

As there is justification showing that Poiseuille＇s Law is not suited for vertical Capillary tube viscometer, Poiseuille＇s Law has not been used to deduce the calculation formula for measuring liquid viscosity by means of vertical Capillary tube viseometer; it can only be used to deduce the calculation formula for measuring liquid viscosity by horizontal capillary tube viscometer. In this article,we explained the extension of Poiseuille＇s Law to deduce the Calculation formula for measuring liquid viscosity by using shallow pool and deep pool Capillar tube viscometer, and so corrected the mistakes in using Poiseuille＇s Law for a long time.