Abstract
In this paper, an efficient ghost-cell based immersed boundary method is introduced to perform direct numerical simulation (DNS) of mass transfer problems in particulate flows. The fluid-solid coupling is achieved by implicit incorporation of the boundary conditions into the discretized momentum and species conservation equations of the fluid phase. Taking the advantage of a second order quadratic interpolation scheme utilized in the reconstruction procedures, the unique feature of this ghost-cell based immersed boundary method is its capability to handle mixed boundary conditions at the exact position of the particle surface as encountered in systems with interplay between surface reactions and diffusion. A fixed Eulerian grid is used to solve the conservation equations for the entire computational domain. Following a detailed verification of the method in the limiting case of unsteady molecular diffusion without convection, we apply our method to study fluid-particle mass transfer for flow around a single sphere and a dense stationary array consisting of hundreds of spheres over a range of Damköhler numbers.
| Original language | English |
|---|---|
| Pages (from-to) | 1-18 |
| Number of pages | 18 |
| Journal | Chemical Engineering Science |
| Volume | 176 |
| DOIs | |
| Publication status | Published - 2 Feb 2018 |
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Keywords
- Damköhler number
- Direct numerical simulation
- Gas-solid flow
- Immersed boundary method
- Mass transfer
- Mixed boundary condition
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Direct numerical simulation of fluid flow and mass transfer in dense fluid-particle systems with surface reactions. / Lu, J.; Das, S.; Peters, E.A.J.F.; Kuipers, J.A.M.
In: Chemical Engineering Science, Vol. 176, 02.02.2018, p. 1-18.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Direct numerical simulation of fluid flow and mass transfer in dense fluid-particle systems with surface reactions
AU - Lu, J.
AU - Das, S.
AU - Peters, E.A.J.F.
AU - Kuipers, J.A.M.
PY - 2018/2/2
Y1 - 2018/2/2
N2 - In this paper, an efficient ghost-cell based immersed boundary method is introduced to perform direct numerical simulation (DNS) of mass transfer problems in particulate flows. The fluid-solid coupling is achieved by implicit incorporation of the boundary conditions into the discretized momentum and species conservation equations of the fluid phase. Taking the advantage of a second order quadratic interpolation scheme utilized in the reconstruction procedures, the unique feature of this ghost-cell based immersed boundary method is its capability to handle mixed boundary conditions at the exact position of the particle surface as encountered in systems with interplay between surface reactions and diffusion. A fixed Eulerian grid is used to solve the conservation equations for the entire computational domain. Following a detailed verification of the method in the limiting case of unsteady molecular diffusion without convection, we apply our method to study fluid-particle mass transfer for flow around a single sphere and a dense stationary array consisting of hundreds of spheres over a range of Damköhler numbers.
AB - In this paper, an efficient ghost-cell based immersed boundary method is introduced to perform direct numerical simulation (DNS) of mass transfer problems in particulate flows. The fluid-solid coupling is achieved by implicit incorporation of the boundary conditions into the discretized momentum and species conservation equations of the fluid phase. Taking the advantage of a second order quadratic interpolation scheme utilized in the reconstruction procedures, the unique feature of this ghost-cell based immersed boundary method is its capability to handle mixed boundary conditions at the exact position of the particle surface as encountered in systems with interplay between surface reactions and diffusion. A fixed Eulerian grid is used to solve the conservation equations for the entire computational domain. Following a detailed verification of the method in the limiting case of unsteady molecular diffusion without convection, we apply our method to study fluid-particle mass transfer for flow around a single sphere and a dense stationary array consisting of hundreds of spheres over a range of Damköhler numbers.
KW - Damköhler number
KW - Direct numerical simulation
KW - Gas-solid flow
KW - Immersed boundary method
KW - Mass transfer
KW - Mixed boundary condition
UR - http://www.scopus.com/inward/record.url?scp=85032198202&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2017.10.018
DO - 10.1016/j.ces.2017.10.018
M3 - Article
AN - SCOPUS:85032198202
VL - 176
SP - 1
EP - 18
JO - Chemical Engineering Science
JF - Chemical Engineering Science
SN - 0009-2509
ER -