Open AccessSedimentation of two unequal spheres in a square tube at low Reynolds numbers
Author(s) -
Geng Guan,
Yuxiang Ying,
Deming Nie
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/692/4/042033
Subject(s) - reynolds number , spheres , settling , lattice boltzmann methods , square (algebra) , mechanics , physics , sedimentation , steady state (chemistry) , classical mechanics , mathematics , geometry , thermodynamics , geology , chemistry , astronomy , turbulence , paleontology , sediment
The settling behaviors of two unequal spheres in a square tube at low Reynolds numbers were numerically studied through a three-dimensional lattice Boltzmann method (LBM). Due to the hydrodynamic interaction, a periodic state or a steady state is achieved according to the density ratio between the spheres. In addition, it is seen that the spheres form a staggered stable configuration at the steady state, for which both spheres rotate in the same manner. The effects of the Reynolds number were also examined.