Full Record

Author | Adnan Hamid |

Title | Direct Numerical Simulation Studies of Sedimentation of Spherical Particles |

URL | http://hdl.handle.net/2433/188621 |

Publication Date | 2014 |

Date Accessioned | 2014-06-26 06:20:51 |

University/Publisher | Kyoto University |

Subjects/Keywords | Colloid; Sedimentation; Direct Numerical Simulation; Hydrodynamic Interaction; Diffusion; Smooth Profile Method |

Contributors | 山本, 量一 (advisor); 松坂, 修二 (advisor); 古賀, 毅 (advisor) |

Language | en |

Country of Publication | jp |

Record ID | handle:2433/188621 |

Repository | kyoto |

Date Indexed | 2020-09-08 |

Issued Date | 2014-03-24 00:00:00 |

Sample Search Hits | Sample Images

…Lattice Boltzmann method
MSD
Mean-square displacement
NS
Navier Stokes
PDF
Pair distribution function
Pe
Peclet number
PY
Percus-Yevick
RDF
Radial distribution function
Re
Reynolds number
SP
*Smooth* profile
SRD
Stochastic rotational…

…r
Shell thickness in RDF
l
Size of hypothetical blob of fluid
ϕ(x)
*Smooth* profile function
x
Spatial coordinate
Cβ (r)
Spatial correlation function
ts
Stokes time
Vs
Stokes velocity
σf
Stress tensor
Si
Surface
L…

…mid plane of the cell where walls have no effects
this velocity field decays as r−1 . Due to this large velocity field in the middle plane, the *interaction* of the velocity field of a particle with other particles is larger than the velocity field of…

…the particle near the walls. This strong *interaction* of particles in the middle plane will induce
larger velocity fluctuations than particles near the walls. Hence, there exists a gradient in the
velocity fluctuations, being maximum in the middle plane…

…volume fractions, this weak *interaction* competes with the many-body interactions, which then lead to the
isotropic microstructure, similar to that in hard-sphere distribution. Climent et al. [52] observed
a similar mechanism in their study…

…Under sedimentation, the microstructure of the suspension is determined by the long-range hydrodynamic *interaction* (HIs), which are characterized by large time and length scales, features
that render the non-equilibrium properties of the…

…x29;
Si
The basic idea of the SP method is to solve the modified NS equation over the entire domain,
by treating the colloids as fluid particles, where particles are represented using a *smooth* phase
Chapter 1. Introduction
9
field 0 ≤ ϕ (x,t…