TY - JOUR
T1 - Modelling Particle Capture Efficiency with Lattice Boltzmann Method
AU - Jianhua Fan, Franck Lominé & Mustapha Hellou
JO - Communications in Computational Physics
VL - 4
SP - 932
EP - 950
PY - 2018
DA - 2018/04
SN - 23
DO - http://doi.org/10.4208/cicp.OA-2016-0236
UR - https://global-sci.org/intro/article_detail/cicp/11200.html
KW - Fibrous filter, capture efficiency, two-way coupling, lattice Boltzmann method, discrete element method.
AB - <p style="text-align: justify;">The transport and deposition of particles over a fixed obstacle set in a fluid
flow is investigated numerically. A two-dimensional model, based on lattice Boltzmann
(LB) method and discrete element (DE) method, is used to simulate particle
deposition. The corresponding method is two-way coupling in the sense that particle
motion affects the fluid flow and reciprocally. The particle capture efficiency, as a
function of particle size and Stokes number, is investigated using one-way (effect of
the particle on the fluid is not considered) and two-way coupling respectively. The numerical
simulations presented in this work are useful to understand the transport and
deposition of particles and to predict the single fiber collection efficiency. The effect of
obstruction shape on single fiber collection efficiency is investigated with LB-DE methods.
Results show that the influence of particle on the flow field cannot be neglected
for particles with large size. Numerical results for circular fiber collection efficiency
are in good agreement with theoretical prediction and existing correlations. Enhanced
collection efficiency is achieved by changing the fiber shape.</p>