Abstract
The mixing of granular materials is notoriously difficult to predict partly due to the complicated mixing mechanisms of particles and their variable flow kinematics. Despite many theoretical studies in idealized configurations of chute and rolling-mode drum, a generic macroscopic model for granular mixing has not been achieved. This paper proposes a continuum model for simulating the mixing of monodisperse particles by combining the μ(I) rheological theory and the convection-diffusion transport equation. The model, implemented via an operator-split scheme, is completely temporal-spatial and able to deal with both continuous flows and transient avalanches. Equipped with a rate-dependent diffusivity, it well recovers the particle concentration at different stages of mixing in slowly rotating drum. Moreover, having been used to simulate granular flow under different conditions, the proposed continuum model may have the potential as a general model to describe particle mixing in different processes.
| Original language | English |
|---|---|
| Pages (from-to) | 19251-19262 |
| Number of pages | 12 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 58 |
| Issue number | 41 |
| DOIs | |
| Publication status | Published - 16 Oct 2019 |
Cite this
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110th anniversary : continuum modeling of granular mixing in a rotating drum. / Zheng, Qijun; Bai, Liang; Yang, Liuyimei; Yu, Aibing.
In: Industrial and Engineering Chemistry Research, Vol. 58, No. 41, 16.10.2019, p. 19251-19262.Research output: Contribution to journal › Conference article › Other
TY - JOUR
T1 - 110th anniversary
T2 - continuum modeling of granular mixing in a rotating drum
AU - Zheng, Qijun
AU - Bai, Liang
AU - Yang, Liuyimei
AU - Yu, Aibing
PY - 2019/10/16
Y1 - 2019/10/16
N2 - The mixing of granular materials is notoriously difficult to predict partly due to the complicated mixing mechanisms of particles and their variable flow kinematics. Despite many theoretical studies in idealized configurations of chute and rolling-mode drum, a generic macroscopic model for granular mixing has not been achieved. This paper proposes a continuum model for simulating the mixing of monodisperse particles by combining the μ(I) rheological theory and the convection-diffusion transport equation. The model, implemented via an operator-split scheme, is completely temporal-spatial and able to deal with both continuous flows and transient avalanches. Equipped with a rate-dependent diffusivity, it well recovers the particle concentration at different stages of mixing in slowly rotating drum. Moreover, having been used to simulate granular flow under different conditions, the proposed continuum model may have the potential as a general model to describe particle mixing in different processes.
AB - The mixing of granular materials is notoriously difficult to predict partly due to the complicated mixing mechanisms of particles and their variable flow kinematics. Despite many theoretical studies in idealized configurations of chute and rolling-mode drum, a generic macroscopic model for granular mixing has not been achieved. This paper proposes a continuum model for simulating the mixing of monodisperse particles by combining the μ(I) rheological theory and the convection-diffusion transport equation. The model, implemented via an operator-split scheme, is completely temporal-spatial and able to deal with both continuous flows and transient avalanches. Equipped with a rate-dependent diffusivity, it well recovers the particle concentration at different stages of mixing in slowly rotating drum. Moreover, having been used to simulate granular flow under different conditions, the proposed continuum model may have the potential as a general model to describe particle mixing in different processes.
UR - http://www.scopus.com/inward/record.url?scp=85073540944&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.9b03642
DO - 10.1021/acs.iecr.9b03642
M3 - Conference article
VL - 58
SP - 19251
EP - 19262
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 41
ER -