使用光子相关光谱法对层流剪切速率进行绝对测量。

Absolute measurement of laminar shear rate using photon correlation spectroscopy.

作者信息

Jenner Elliot, D'Urso Brian

出版信息

Appl Opt. 2015 Oct 20;54(30):8821-6. doi: 10.1364/AO.54.008821.

DOI:10.1364/AO.54.008821

Abstract

Measurement of the components of the shear rate tensor S in a fluid provides insight into the properties of that fluid. We detail a refined method for performing direct and absolute measurement of the components of S in a fluid using photon correlation spectroscopy, which we show gives an absolute, accurate, noninvasive measurement of the shear rate from a single measurement at a single location. We demonstrate this method in a cone and plate rheometer, where we obtain measurements of the shear rate of water in 10 s with an absolute accuracy of 2%.

摘要

测量流体中剪切速率张量S的各分量能深入了解该流体的特性。我们详细介绍了一种使用光子相关光谱法对流体中S的各分量进行直接和绝对测量的改进方法，该方法能在单一位置进行单次测量，给出绝对、准确且非侵入性的剪切速率测量结果。我们在锥板流变仪中演示了这种方法，在该仪器中我们在10秒内获得了水的剪切速率测量值，绝对精度为2%。