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 - Lettere Al Nuovo Cimento
JF - Lettere Al Nuovo Cimento
IS - 2
M1 - 28002
ER -