TY - JOUR
T1 - Investigations of lateral particle distribution for spherical and highly non-spherical particles by means of steady-state/transient RANS and LES simulations
AU - Knoll, Mario
AU - Gerhardter, Hannes
AU - Hochenauer, Christoph
AU - Tomazic, Peter
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/22
Y1 - 2021/1/22
N2 - Precise predictions of particle motion behavior after injection into a fluid flow are essential for process design and optimization in industrial applications. The goal of this work is to present a numerically inexpensive CFD model to predict lateral particle distribution after injection into a vertical cross flow. To this end, a specially designed and application-oriented flow channel, a so-called particle cross sifter, was built, which was experimentally and numerically analyzed. In the experiments a type of boiler slag powder, consisting of particles with various sizes and shapes, was injected into the cross sifter. For the numerical simulations different turbulence modeling approaches, such as RANS and LES, in combination with the DPM were applied. The results were compared to experimental data. It is highlighted, that only the LES approach in combination with the DPM is able to predict the lateral particle distribution with sufficient accuracy
AB - Precise predictions of particle motion behavior after injection into a fluid flow are essential for process design and optimization in industrial applications. The goal of this work is to present a numerically inexpensive CFD model to predict lateral particle distribution after injection into a vertical cross flow. To this end, a specially designed and application-oriented flow channel, a so-called particle cross sifter, was built, which was experimentally and numerically analyzed. In the experiments a type of boiler slag powder, consisting of particles with various sizes and shapes, was injected into the cross sifter. For the numerical simulations different turbulence modeling approaches, such as RANS and LES, in combination with the DPM were applied. The results were compared to experimental data. It is highlighted, that only the LES approach in combination with the DPM is able to predict the lateral particle distribution with sufficient accuracy
KW - Computational fluid dynamics
KW - Large eddy simulations
KW - Lateral particle distribution
KW - Multiphase flow
KW - Non-spherical particles
KW - Particle cross sifter
UR - http://www.scopus.com/inward/record.url?scp=85092647406&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2020.10.029
DO - 10.1016/j.powtec.2020.10.029
M3 - Article
SN - 0032-5910
VL - 378
SP - 618
EP - 638
JO - Powder Technology
JF - Powder Technology
IS - 378
ER -