Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session KP1: Poster Session (3:20-4:05pm)
Monday, November 19, 2018
Georgia World Congress Center Room: Level 1, Exhibit Hall B2 by the GFM videos
Abstract ID: BAPS.2018.DFD.KP1.146
Abstract: KP1.00146 : Normal Stresses of sheared Suspensions in crystalline States
This presentation extends a geometric analysis on viscosity of solutions in crystalline states to their respective 2nd normal stress . This extension establishes a key relationship between the structured-suspension viscosity and its normal stress components . For a non-colloidal mixture, it is shown that the 2nd normal stress equals the average-shear stress on the solid particles plus a constant dependent on the solutions’ crystalline state. The analysis deduces that the second normal stress is negative always when the system possesses ordered states. Experimental and numerical data on for non-colloidal equal-size spherical suspensions reveal three distinct particle concentration spectra each characterized by the effective crystalline state of the particles in the mixture. A comparison of this analysis and experimental data on suggests a crystalline transition from simple cubic to face-centered cubic states when the particle volume fraction exceeds 45%, in agreement with light scattering observations and viscosity data.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.KP1.146
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