Experimental observation of shear thickening oscillation

TY - JOUR

T1 - Experimental observation of shear thickening oscillation

AU - Nagahiro, Shin-ichiro

AU - Nakanishi, Hiizu

AU - Mitarai, Namiko

PY - 2013/10/1

Y1 - 2013/10/1

N2 - We report experimental observations of the shear thickening oscillation, i.e. the spontaneous macroscopic oscillation in the shear flow of severe shear thickening fluid. Using a density-matched starch-water mixture, in the cylindrical shear flow of a few centimeters flow width, we observed that well-marked vibrations of frequency around 20 Hz appear via a Hopf bifurcation upon increasing externally applied shear stress. The parameter range and the frequency of the vibration are consistent with those expected by a simple phenomenological model of the dilatant fluid.

AB - We report experimental observations of the shear thickening oscillation, i.e. the spontaneous macroscopic oscillation in the shear flow of severe shear thickening fluid. Using a density-matched starch-water mixture, in the cylindrical shear flow of a few centimeters flow width, we observed that well-marked vibrations of frequency around 20 Hz appear via a Hopf bifurcation upon increasing externally applied shear stress. The parameter range and the frequency of the vibration are consistent with those expected by a simple phenomenological model of the dilatant fluid.

U2 - 10.1209/0295-5075/104/28002

DO - 10.1209/0295-5075/104/28002

M3 - Journal article

SN - 0295-5075

VL - 104

JO - EPL

JF - EPL

IS - 2

M1 - 28002

ER -