Direct Numerical Simulation of Reactive Fluid–Particle Systems Using an Immersed Boundary Method
In this paper, direct numerical simulation (DNS) is performed to study coupled heat and mass-transfer problems in fluid–particle systems. On the particles, an exothermic surface reaction takes place. The heat and mass transport is coupled through the particle temperature, which offers a dynamic boun...
Saved in:
| Published in: | Industrial & engineering chemistry research Vol. 57; no. 45; pp. 15565 - 15578 |
|---|---|
| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
United States
American Chemical Society
14-11-2018
|
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In this paper, direct numerical simulation (DNS) is performed to study coupled heat and mass-transfer problems in fluid–particle systems. On the particles, an exothermic surface reaction takes place. The heat and mass transport is coupled through the particle temperature, which offers a dynamic boundary condition for the thermal energy equation of the fluid phase. Following the case of the unsteady mass and heat diffusion in a large pool of static fluid, we consider a stationary spherical particle under forced convection. In both cases, the particle temperatures obtained from DNS show excellent agreement with established solutions. After that, we investigate the three-bead reactor, and finally a dense particle array composed of hundreds of particles distributed in a random fashion is studied. The concentration and temperature profiles are compared with a one-dimensional heterogeneous reactor model, and the heterogeneity inside the array is discussed. |
|---|---|
| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0888-5885 1520-5045 |
| DOI: | 10.1021/acs.iecr.8b03158 |