Investigation of particle dispersion and deposition in a channel with elliptic obstructions using lattice Boltzmann method

2012 ◽  
Author(s):  
A. Tehrani ◽  
A. Moosavi
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Particle Dispersion ◽  
Boltzmann Method

Particle Dispersion Simulator for Gel Printer

2014 ◽  
Vol 783-786 ◽  
pp. 2333-2338
Author(s):  
Masato Makino ◽  
M. Hasnat Kabir ◽  
Jin Gong ◽  
Hidemitsu Furukawa
Keyword(s):  
Lattice Boltzmann Method ◽  
Rheological Properties ◽  
Lattice Boltzmann ◽  
Particle Dispersion ◽  
Deformable Particles ◽  
Boltzmann Method ◽  
Dynamics Of Particles

We are developing food printer to design arbitrary shaped foods. The ink for the food printer, injected from nozzle to make foods, is the dispersion of rigid and deformable particles. Simulation for rheological properties and interaction among particles and walls could be one of the important tools to develop the ink for the food printer. We introduce our simulators to investigate the dynamics of particles dispersion. The particles are expressed as Lagrange mesh immersed in fluid. The fluid is solved by Lattice Boltzmann method. The viscosity of the dispersion of the rigid and the deformable particles is shown in this study.

Numerical Study of Angle of Incidence Effect on Particle Deposition Over a Square Cylinder in a Channel Using Lattice-Boltzmann Method

2009 ◽  
Author(s):  
S. Jafari ◽  
M. Salmanzadeh ◽  
M. Rahnama ◽  
G. Ahmadi
Keyword(s):  
Computational Model ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Particle Deposition ◽  
Numerical Study ◽  
Particle Dispersion ◽  
Solid Particles ◽  
Angle Of Incidence ◽  
Square Cylinder ◽  
Boltzmann Method

Particle dispersion and deposition over a square cylinder with different angles of incidence (α = 0°, 45°) in a channel flow was investigated numerically. A computational model using Lattice-Boltzmann Method (LBM) for flow simulation was developed. The interpolated bounce-back (IBB) boundary condition was applied to model the no-slip boundary conditions on curved boundary. The computational model was used to simulate the two-dimensional airflow field in the duct with obstructing square cylinder. A Lagrangian approach was used for simulation of spherical, solid particles suspended in the airflow in the duct. The Reynolds numbers were in the range of laminar. The formation of the von Karman vortex sheet behind the cylinder was predicted by the present LBM simulation. It was shown that the periodicity of the simulated vortex street agrees well with available experimental data. Transport and deposition of 1 μm to 100 μm particles in the duct were studied. The instantaneous flow field was used to evaluate the particle trajectories. The forces included in the particle equation of motion were drag, lift, gravity, and Brownian. The simulation results shows that the particle deposition efficiency decreases when the angle of incidence is increased from 0° to 45° and also more vigorous vortex shedding was observed at α = 45°.

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