Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 20th International Conference on Fluidized Bed Combustion |
| Place of Publication | Beijing |
| Pages | 851-856 |
| Publication status | Published - 2009 |
| MoE publication type | A4 Article in a conference publication |
| Event | 20th International Conference on Fluidized Bed Combustion - Xi'an, China Duration: 18 May 2009 → 21 May 2009 |
Conference
| Conference | 20th International Conference on Fluidized Bed Combustion |
|---|---|
| Country | China |
| City | Xi'an |
| Period | 18/05/09 → 21/05/09 |
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Keywords
- particle mixtures
- CFD
- 2D
- hydrodynamics
- CFB
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CFD Modelling of particle mixtures in a 2D CFB. / Seppälä, Maiju; Kallio, Sirpa.
Proceedings of the 20th International Conference on Fluidized Bed Combustion. Beijing, 2009. p. 851-856.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - CFD Modelling of particle mixtures in a 2D CFB
AU - Seppälä, Maiju
AU - Kallio, Sirpa
PY - 2009
Y1 - 2009
N2 - The capability of Fluent 6.2.16 to simulate particle mixtures in a laboratory scale 2D circulating fluidized bed (CFB) unit has been tested. In the simulations, the solids were described as one or two particle phases. The loading ratio of small to large particles, particle diameters and the gas inflow velocity were varied. The paper presents the segregation patterns of the particle phases obtained from the simulations. When the fraction of large particles was 50% or larger, large particles segregated, as expected, to the wall regions and to the bottom part of the riser. However, when the fraction of large particles was 10%, an excess of large particles was found in the upper half of the riser. The explanation for this unexpected phenomenon was found in the distribution of the large particles between the slow clusters and the faster moving lean suspension.
AB - The capability of Fluent 6.2.16 to simulate particle mixtures in a laboratory scale 2D circulating fluidized bed (CFB) unit has been tested. In the simulations, the solids were described as one or two particle phases. The loading ratio of small to large particles, particle diameters and the gas inflow velocity were varied. The paper presents the segregation patterns of the particle phases obtained from the simulations. When the fraction of large particles was 50% or larger, large particles segregated, as expected, to the wall regions and to the bottom part of the riser. However, when the fraction of large particles was 10%, an excess of large particles was found in the upper half of the riser. The explanation for this unexpected phenomenon was found in the distribution of the large particles between the slow clusters and the faster moving lean suspension.
KW - particle mixtures
KW - CFD
KW - 2D
KW - hydrodynamics
KW - CFB
M3 - Conference article in proceedings
SN - 978-7-302-20146-5
SP - 851
EP - 856
BT - Proceedings of the 20th International Conference on Fluidized Bed Combustion
CY - Beijing
ER -