Shear-induced structure of concentrated suspensions of non-Brownian particles in a microgravity environment
Shear-induced structure of concentrated suspensions of non-Brownian particles in a microgravity environment
复制标题
微重力环境中非布朗颗粒浓缩悬浮液的剪切诱导结构
DOI：
10.1007/bf02945985
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Page
中科院分区：
文献类型：
--
作者：
A. Strybulevych;J. Page
我们报告的稳态剪切粘度的非布朗颗粒悬浮液中的颗粒细致的密度匹配到周围的液体模拟微重力环境的测量。四种不同类型的行为被发现的悬浮液的粘度作为剪切速率和浓度的变化。剪切引起的结构和动力学的悬浮液的数据进行了讨论可能的解释。此外，剪切速率的平均颗粒速度及其方差的依赖性已被测量使用一种新的技术，在超声相关光谱称为动态声散射，展示了这种技术的潜力，用于调查剪切颗粒悬浮液的动力学。
We report measurements of the steady-state shear viscosity of non-Brownian particulate suspensions in which the particles were meticulously density matched to the surrounding liquid to simulate a microgravity environment. Four distinct types of behavior were found for the viscosity of the suspensions as the shear rate and concentration were varied. Possible interpretations of the data in term of the shear-induced structure and dynamics of the suspensions are discussed. In addition, the shear rate dependence of the average particle velocity and its variance has been measured using a new technique in ultrasonic correlation spectroscopy called Dynamic Sound Scattering, demonstrating the potential of this technique for investigating the dynamics of sheared particulate suspensions.