TY - JOUR
T1 - Screening, Hyperuniformity, and Instability in the Sedimentation of Irregular Objects
AU - Goldfriend, Tomer
AU - Diamant, Haim
AU - Witten, Thomas A.
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/4/14
Y1 - 2017/4/14
N2 - We study the overdamped sedimentation of non-Brownian objects of irregular shape using fluctuating hydrodynamics. The anisotropic response of the objects to flow, caused by their tendency to align with gravity, directly suppresses concentration and velocity fluctuations. This allows the suspension to avoid the anomalous fluctuations predicted for suspensions of symmetric spheroids. The suppression of concentration fluctuations leads to a correlated, hyperuniform structure. For certain object shapes, the anisotropic response may act in the opposite direction, destabilizing uniform sedimentation.
AB - We study the overdamped sedimentation of non-Brownian objects of irregular shape using fluctuating hydrodynamics. The anisotropic response of the objects to flow, caused by their tendency to align with gravity, directly suppresses concentration and velocity fluctuations. This allows the suspension to avoid the anomalous fluctuations predicted for suspensions of symmetric spheroids. The suppression of concentration fluctuations leads to a correlated, hyperuniform structure. For certain object shapes, the anisotropic response may act in the opposite direction, destabilizing uniform sedimentation.
UR - http://www.scopus.com/inward/record.url?scp=85017432172&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.118.158005
DO - 10.1103/PhysRevLett.118.158005
M3 - מאמר
AN - SCOPUS:85017432172
VL - 118
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 15
M1 - 158005
ER -