Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying
A detached eddy simulation (DES) and a k-ε-based Reynolds-averaged Navier–Stokes (RANS) calculation on the co-current spray drying chamber is presented. The {DES} used here is based on the Spalart–Allmaras (SA) turbulence model, whereas the standard k-ε (SKE) was considered here for comparison purpo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2015
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| Online Access: | http://umpir.ump.edu.my/id/eprint/13046/1/fkksa-2015-jolius-Unsteady%20RANS%20and%20Detached%20Eddy%20Simulation.pdf |
| _version_ | 1796991266073870336 |
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| author | Jolius, Gimbun Noor Intan Shafinas, Muhammad Law, Woon Phui |
| author_facet | Jolius, Gimbun Noor Intan Shafinas, Muhammad Law, Woon Phui |
| author_sort | Jolius, Gimbun |
| collection | UMP |
| description | A detached eddy simulation (DES) and a k-ε-based Reynolds-averaged Navier–Stokes (RANS) calculation on the co-current spray drying chamber is presented. The {DES} used here is based on the Spalart–Allmaras (SA) turbulence model, whereas the standard k-ε (SKE) was considered here for comparison purposes. Predictions of the mean axial velocity, temperature and humidity profile have been evaluated and compared with experimental measurements. The effects of the turbulence model on the predictions of the mean axial velocity, temperature and the humidity profile are most noticeable in the (highly anisotropic) spraying region. The findings suggest that {DES} provide a more accurate prediction (with error less than 5) of the flow field in a spray drying chamber compared with RANS-based k-ε models. The {DES} simulation also confirmed the presence of anisotropic turbulent flow in the spray dryer from the analysis of the velocity component fluctuations and turbulent structure as illustrated by the Q-criterion. |
| first_indexed | 2024-03-06T12:03:32Z |
| format | Article |
| id | UMPir13046 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:03:32Z |
| publishDate | 2015 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir130462019-10-03T08:10:15Z http://umpir.ump.edu.my/id/eprint/13046/ Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying Jolius, Gimbun Noor Intan Shafinas, Muhammad Law, Woon Phui TP Chemical technology A detached eddy simulation (DES) and a k-ε-based Reynolds-averaged Navier–Stokes (RANS) calculation on the co-current spray drying chamber is presented. The {DES} used here is based on the Spalart–Allmaras (SA) turbulence model, whereas the standard k-ε (SKE) was considered here for comparison purposes. Predictions of the mean axial velocity, temperature and humidity profile have been evaluated and compared with experimental measurements. The effects of the turbulence model on the predictions of the mean axial velocity, temperature and the humidity profile are most noticeable in the (highly anisotropic) spraying region. The findings suggest that {DES} provide a more accurate prediction (with error less than 5) of the flow field in a spray drying chamber compared with RANS-based k-ε models. The {DES} simulation also confirmed the presence of anisotropic turbulent flow in the spray dryer from the analysis of the velocity component fluctuations and turbulent structure as illustrated by the Q-criterion. Elsevier Ltd 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/13046/1/fkksa-2015-jolius-Unsteady%20RANS%20and%20Detached%20Eddy%20Simulation.pdf Jolius, Gimbun and Noor Intan Shafinas, Muhammad and Law, Woon Phui (2015) Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying. Chinese Journal of Chemical Engineering, 23 (9). 1421 - 1428. ISSN 1004-9541. (Published) http://dx.doi.org/10.1016/j.cjche.2015.05.007 DOI: 10.1016/j.cjche.2015.05.007 |
| spellingShingle | TP Chemical technology Jolius, Gimbun Noor Intan Shafinas, Muhammad Law, Woon Phui Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title | Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title_full | Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title_fullStr | Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title_full_unstemmed | Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title_short | Unsteady RANS and Detached Eddy Simulation of the Multiphase Flow in a Co-Current Spray Drying |
| title_sort | unsteady rans and detached eddy simulation of the multiphase flow in a co current spray drying |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/13046/1/fkksa-2015-jolius-Unsteady%20RANS%20and%20Detached%20Eddy%20Simulation.pdf |
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