Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers
The effect of type of inlet conditions on the predictions of EulerianEulerian simulations of a circulating fluidized bed riser has been investigated in both 2D and 3D domains. The 2D simulations were conducted using 3 different inlet configurations: (A) solids entering in radial direction from a two...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/12841 |
| _version_ | 1848748188943515648 |
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| author | Shah, Milinkumar Utikar, Ranjeet Evans, G. Tade, Moses Pareek, Vishnu |
| author_facet | Shah, Milinkumar Utikar, Ranjeet Evans, G. Tade, Moses Pareek, Vishnu |
| author_sort | Shah, Milinkumar |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The effect of type of inlet conditions on the predictions of EulerianEulerian simulations of a circulating fluidized bed riser has been investigated in both 2D and 3D domains. The 2D simulations were conducted using 3 different inlet configurations: (A) solids entering in radial direction from a two-sided inlet and gas entering axially from the bottom inlet, (B) solid entering axially from a two-sided bottom inlet near the wall and gas entering axially from a bottom inlet at the center, and (C) gas phase entering axially from a two-sided bottom inlet near the wall and solids entering axially from a bottom inlet at the center. In 2D simulations, it was found that both time-averaged axial velocity and solids volume fraction radial profiles were functions of the inlet kinetic energy as well as gas solidmixingpatterns at the inlet. Whereas 2D simulations using boundary conditions A and C showed significant deviations from experimental profiles, the boundary condition B as well as full-scale 3D simulations gave reasonable agreements with experimental observations. |
| first_indexed | 2025-11-14T07:01:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-12841 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:01:05Z |
| publishDate | 2012 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-128412017-09-13T15:00:24Z Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers Shah, Milinkumar Utikar, Ranjeet Evans, G. Tade, Moses Pareek, Vishnu The effect of type of inlet conditions on the predictions of EulerianEulerian simulations of a circulating fluidized bed riser has been investigated in both 2D and 3D domains. The 2D simulations were conducted using 3 different inlet configurations: (A) solids entering in radial direction from a two-sided inlet and gas entering axially from the bottom inlet, (B) solid entering axially from a two-sided bottom inlet near the wall and gas entering axially from a bottom inlet at the center, and (C) gas phase entering axially from a two-sided bottom inlet near the wall and solids entering axially from a bottom inlet at the center. In 2D simulations, it was found that both time-averaged axial velocity and solids volume fraction radial profiles were functions of the inlet kinetic energy as well as gas solidmixingpatterns at the inlet. Whereas 2D simulations using boundary conditions A and C showed significant deviations from experimental profiles, the boundary condition B as well as full-scale 3D simulations gave reasonable agreements with experimental observations. 2012 Journal Article http://hdl.handle.net/20.500.11937/12841 10.1021/ie200940f American Chemical Society restricted |
| spellingShingle | Shah, Milinkumar Utikar, Ranjeet Evans, G. Tade, Moses Pareek, Vishnu Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title | Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title_full | Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title_fullStr | Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title_full_unstemmed | Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title_short | Effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| title_sort | effect of inlet boundary conditions on computational fluid dynamics (cfd) simulations of gas-solid flows in risers |
| url | http://hdl.handle.net/20.500.11937/12841 |