Settling of Spherical Objects Through Thixotropic Fluids; A Statistical Approach

Nahid Maleki-Jirsaraei, Samira Hasani and Somayeh Azizi

Modern Applied Science, 2018, vol. 12, issue 5, 72

Abstract: The falling of an object through a non-Newtonian fluid is an interesting problem, depending on the details of the rheology of the fluid. In this paper we report on the settling of spherical objects through non-Newtonian fluids- Laponite. A falling object’s behavior in passing through a thixotropic colloidal suspension of synthetic clay, Laponite, has been reported to have many behavioral regimes. Here we report a new regime where irregular motion is observed. We argue that this irregular motion may be interpreted as onset of chaos. Observation of this regime depends on the size of the falling sphere, relaxation time of fluid and concentration of particles in the suspension.Â

Date: 2018
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