Discontinuous shear thickening and steady-state multiplicity in a granular suspension

ORAL

Abstract

A concentrated suspension of neutrally buoyant non-Brownian spheres sheared between concentric cylinders with an inner radius-to-gap ratio of 0.037 undergoes discontinuous shear thickening under shear rate control but passes through an S-shaped viscosity curve with multiple states under stress control. This behavior is well described by simulation results that incorporate particle-particle frictional forces into the hydrodynamic description and lead to an analytical interpolation relation between low friction and high friction states that predicts an S-shaped viscosity curve.

–

Authors

  • Morton Denn

    Benjamin Levich Institute, City College of New York

  • Henri De Cagny

    Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam

  • Zhongcheng Pan

    Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam

  • Daniel Bonn

    Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam

  • Ryohei Seto

    Benjamin Levich Institute, City College of New York

  • Romain Mari

    Benjamin Levich Institute, City College of New York

  • Jeffrey Morris

    Benjamin Levich Institute, City College of New York, Levich Institute and ChE, City College of New York