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本文尽可能按照测量技术委员会的规定格式,探讨关于各种粘度测量标准说明书上的有关数据和文献上的有关内容。 1.单位和辅助单位有许多测量和表示粘度的方法及单位,如动力粘度以质量或力、长度和时间这些基本单位表示,运动粘度以长度和时间表示,各种专用粘度以实验观察值(如流动时间,所施加的驱动重量,仪器刻度盘上的读数,有些是所测得的量的比率)为单位,而非牛顿流体的表观粘度比绝对粘度更易于测定。存在众多单位的原因是有多种多样
This article as much as possible in accordance with the provisions of the Technical Committee of measurement format, on various viscosity measurement standards on the relevant data and literature on the content. 1. Units and Auxiliary Units There are many methods and units for measuring and indicating viscosity, such as dynamic viscosities expressed in terms of mass or force, length and time, kinematic viscosities expressed in length and time, and values for various specific viscosities in experimental observations Such as flow time, applied drive weight, readings on the instrument dial, and some as a ratio of the measured quantities), whereas non-Newtonian fluids have an apparent viscosity that is easier to measure than absolute viscosity. There are many reasons for the existence of a wide variety of units