Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field
This study considers the quasi-two-dimensional flow of an electrically conducting fluid subjected to a strong out-of-plane magnetic field in a rectangular duct. The effect of Hartmann number on flow features such as the length of the downstream recirculation bubbles and the threshold Reynolds number...
| Main Authors: | , , , |
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| Format: | Proceeding Paper |
| Language: | English English |
| Published: |
Australasian Fluid Mechanics Society
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/71548/ http://irep.iium.edu.my/71548/1/71548_Quasi-Two-Dimensional.pdf http://irep.iium.edu.my/71548/7/71548_Quasi-two-dimensional%20MHD%20duct%20flow_%D9%8D%D9%8DSCOPUS.pdf |
| _version_ | 1848787468143296512 |
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| author | Mohammed Sapardi, Mohd Azan Hussam, Wisam K. Potherat, Alban Sheard, Gregory J. |
| author_facet | Mohammed Sapardi, Mohd Azan Hussam, Wisam K. Potherat, Alban Sheard, Gregory J. |
| author_sort | Mohammed Sapardi, Mohd Azan |
| building | IIUM Repository |
| collection | Online Access |
| description | This study considers the quasi-two-dimensional flow of an electrically conducting fluid subjected to a strong out-of-plane magnetic field in a rectangular duct. The effect of Hartmann number on flow features such as the length of the downstream recirculation bubbles and the threshold Reynolds numbers between steady-state and unsteady flow regimes for values of the ratio between the throat of the bend and the duct height, β = 1 are identified. The simulations reveal that the primary recirculation bubble length decreases with increasing Hartmann number,
and simultaneously the secondary recirculation bubble is significantly damped compared to the corresponding non-MHD case. The critical Reynolds number where the transitions from steady to unsteady flow occurs was found to increase with increasing of Hartman number. This study provides information that will be useful for refining the design of heat exchanger ducting in MHD systems to maximise the useful mass transport adjacent to the duct walls where heating is applied. |
| first_indexed | 2025-11-14T17:25:24Z |
| format | Proceeding Paper |
| id | iium-71548 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:25:24Z |
| publishDate | 2014 |
| publisher | Australasian Fluid Mechanics Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-715482019-04-25T04:57:39Z http://irep.iium.edu.my/71548/ Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field Mohammed Sapardi, Mohd Azan Hussam, Wisam K. Potherat, Alban Sheard, Gregory J. TA349 Mechanics of engineering. Applied mechanics This study considers the quasi-two-dimensional flow of an electrically conducting fluid subjected to a strong out-of-plane magnetic field in a rectangular duct. The effect of Hartmann number on flow features such as the length of the downstream recirculation bubbles and the threshold Reynolds numbers between steady-state and unsteady flow regimes for values of the ratio between the throat of the bend and the duct height, β = 1 are identified. The simulations reveal that the primary recirculation bubble length decreases with increasing Hartmann number, and simultaneously the secondary recirculation bubble is significantly damped compared to the corresponding non-MHD case. The critical Reynolds number where the transitions from steady to unsteady flow occurs was found to increase with increasing of Hartman number. This study provides information that will be useful for refining the design of heat exchanger ducting in MHD systems to maximise the useful mass transport adjacent to the duct walls where heating is applied. Australasian Fluid Mechanics Society 2014 Proceeding Paper PeerReviewed application/pdf en http://irep.iium.edu.my/71548/1/71548_Quasi-Two-Dimensional.pdf application/pdf en http://irep.iium.edu.my/71548/7/71548_Quasi-two-dimensional%20MHD%20duct%20flow_%D9%8D%D9%8DSCOPUS.pdf Mohammed Sapardi, Mohd Azan and Hussam, Wisam K. and Potherat, Alban and Sheard, Gregory J. (2014) Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field. In: 19th Australasian Fluid Mechanics Conference 2014, 8th-11th Dec. 2014, Melbourne, Australia. https://people.eng.unimelb.edu.au/imarusic/proceedings/19/223.pdf |
| spellingShingle | TA349 Mechanics of engineering. Applied mechanics Mohammed Sapardi, Mohd Azan Hussam, Wisam K. Potherat, Alban Sheard, Gregory J. Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title | Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title_full | Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title_fullStr | Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title_full_unstemmed | Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title_short | Quasi-two-dimensional MHD duct flow around a 180-degree sharp bend in a strong magnetic field |
| title_sort | quasi-two-dimensional mhd duct flow around a 180-degree sharp bend in a strong magnetic field |
| topic | TA349 Mechanics of engineering. Applied mechanics |
| url | http://irep.iium.edu.my/71548/ http://irep.iium.edu.my/71548/ http://irep.iium.edu.my/71548/1/71548_Quasi-Two-Dimensional.pdf http://irep.iium.edu.my/71548/7/71548_Quasi-two-dimensional%20MHD%20duct%20flow_%D9%8D%D9%8DSCOPUS.pdf |