Experimental and numerical studies of fluidization in a circulating fluidized bed
The hydrodynamics of a circulating fluidized bed (CFB) risers is highly complex and is strongly influenced by the distribution of particles, which is governed by the amount of particles, size, form (e.g. spherical or elliptic), density, etc. The CFB riser column has 265 mm, (width), 72 mm (depth) cr...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2005
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| Online Access: | http://eprints.utm.my/5367/1/AhmadHussain2005_ExperimentalAndNumericalStudiesOfFluidization.pdf |
| _version_ | 1796853900889817088 |
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| author | Hussain, Ahmad Ani, Farid Nasir Darus, Amer Nordin Mustafa, Azeman |
| author_facet | Hussain, Ahmad Ani, Farid Nasir Darus, Amer Nordin Mustafa, Azeman |
| author_sort | Hussain, Ahmad |
| collection | ePrints |
| description | The hydrodynamics of a circulating fluidized bed (CFB) risers is highly complex and is strongly influenced by the distribution of particles, which is governed by the amount of particles, size, form (e.g. spherical or elliptic), density, etc. The CFB riser column has 265 mm, (width), 72 mm (depth) cross-section (rectangle) and 2.7 m height. The riser is made up of interchangeable Plexiglas columns. In this study the influence of the amount of particles on the flow pattern in the CFB system is investigated. The particle loading is increased from a dilute to a dense and gas-particle flow is analyzed. Simulations were done using FLUENT 6.1, a CFD package by Fluent Inc. Palm shell particles and air were used as the solid and gas phases, respectively. The simulations were done using the geometrical configuration of a CFB test rig at the Universiti Teknologi Malaysia (UTM). The result discusses the variation of velocity contours, along the riser column and in the riser exit geometry. The effect is significant in the upper region of the riser column and the velocity contours are also influenced by the exit geometry. Simulations results predict that the riser exit cause an upstream exit region of increased solid volume fraction. Experimental and computational results are matched to reasonable agreement. Experimental findings have also helped to refine the numerical modeling of multiphase CFB system. |
| first_indexed | 2024-03-05T18:06:26Z |
| format | Conference or Workshop Item |
| id | utm.eprints-5367 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T18:06:26Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | utm.eprints-53672017-08-28T08:41:25Z http://eprints.utm.my/5367/ Experimental and numerical studies of fluidization in a circulating fluidized bed Hussain, Ahmad Ani, Farid Nasir Darus, Amer Nordin Mustafa, Azeman T Technology (General) The hydrodynamics of a circulating fluidized bed (CFB) risers is highly complex and is strongly influenced by the distribution of particles, which is governed by the amount of particles, size, form (e.g. spherical or elliptic), density, etc. The CFB riser column has 265 mm, (width), 72 mm (depth) cross-section (rectangle) and 2.7 m height. The riser is made up of interchangeable Plexiglas columns. In this study the influence of the amount of particles on the flow pattern in the CFB system is investigated. The particle loading is increased from a dilute to a dense and gas-particle flow is analyzed. Simulations were done using FLUENT 6.1, a CFD package by Fluent Inc. Palm shell particles and air were used as the solid and gas phases, respectively. The simulations were done using the geometrical configuration of a CFB test rig at the Universiti Teknologi Malaysia (UTM). The result discusses the variation of velocity contours, along the riser column and in the riser exit geometry. The effect is significant in the upper region of the riser column and the velocity contours are also influenced by the exit geometry. Simulations results predict that the riser exit cause an upstream exit region of increased solid volume fraction. Experimental and computational results are matched to reasonable agreement. Experimental findings have also helped to refine the numerical modeling of multiphase CFB system. 2005 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/5367/1/AhmadHussain2005_ExperimentalAndNumericalStudiesOfFluidization.pdf Hussain, Ahmad and Ani, Farid Nasir and Darus, Amer Nordin and Mustafa, Azeman (2005) Experimental and numerical studies of fluidization in a circulating fluidized bed. In: International Energy Conference 2005, 5-7 August 2005, Jakarta. |
| spellingShingle | T Technology (General) Hussain, Ahmad Ani, Farid Nasir Darus, Amer Nordin Mustafa, Azeman Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title | Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title_full | Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title_fullStr | Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title_full_unstemmed | Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title_short | Experimental and numerical studies of fluidization in a circulating fluidized bed |
| title_sort | experimental and numerical studies of fluidization in a circulating fluidized bed |
| topic | T Technology (General) |
| url | http://eprints.utm.my/5367/1/AhmadHussain2005_ExperimentalAndNumericalStudiesOfFluidization.pdf |
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