Three-dimensional Numerical Simulation of Dense Gas-Solid Flow in Circulating Fluidized Bed under Rolling Motion of Ship
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- Oka Hideyuki
- National Maritime Research Institute
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- Murata Hiroyuk
- National Maritime Research Institute
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- Harumi Kazuyoshi
- National Maritime Research Institute
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- Kuwayama Tomokazu
- ANSYS Japan K.K.
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- Tsuboi Kazumasa
- ANSYS Japan K.K.
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- Adachi Masaki
- National Maritime Research Institute
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Abstract
To investigate the effects of ship motion on circulating fluidized beds (CFBs), three-dimensional numerical simulations of dense gas-solid flows have been carried out with a two-fluid model and its sub-models based on the kinetic theory of granular flows. In comparison with an upright CFB, a large number of solid particles accumulate in the lower part of the riser under the rolling and constantly inclined conditions, so that solid circulation flux Gs is reduced by more than approximately 70 % under the present set of computational conditions. To determine the reason for the reduction of Gs, downward solid flux and the force of drag and gravity acting on the solid phase were evaluated in the riser of a constantly inclined CFB. Examination of the above quantities showed that in addition to the action of the gravity component perpendicular to the riser axis, the magnitude relation of the axial component of the drag and gravity forces mainly caused the reduction of the solid circulation flux in the present CFB under the inclined condition.
Journal
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- Marine Engineering
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Marine Engineering 45 (Special), 1004-1011, 2010
The Japan Institute of Marine Engineering
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Details 詳細情報について
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- CRID
- 1390282679548125440
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- NII Article ID
- 130004862178
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- NII Book ID
- AA11505252
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- ISSN
- 18843778
- 13461427
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- NDL BIB ID
- 10892768
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed