Elucidating the role of dust concentrations and initial turbulence on rice flour explosion
The explosibility and severity characteristics of rice flour at different concentrations and ignition delay times were investigated experimentally. Meanwhile, the turbulent flow and dust dispersion that affect the dust explosion in a Siwek 20 L spherical chamber were elucidated using computational f...
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/43580/1/Wan%20Zaiton%202025%20powtech2.pdf http://umpir.ump.edu.my/id/eprint/43580/7/Elucidating%20the%20clinker-based%20catalyst%20deactivation%20for%20biodiesel%20production%20in%20a%20continuous%20microwave-assisted%20reactor_abs.pdf |
| _version_ | 1824451751819870208 |
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| author | Wan Zaiton, Wan Sulaiman Mohd Fadzil, Mohd Idris Jolius, Gimbun |
| author_facet | Wan Zaiton, Wan Sulaiman Mohd Fadzil, Mohd Idris Jolius, Gimbun |
| author_sort | Wan Zaiton, Wan Sulaiman |
| collection | UMP |
| description | The explosibility and severity characteristics of rice flour at different concentrations and ignition delay times were investigated experimentally. Meanwhile, the turbulent flow and dust dispersion that affect the dust explosion in a Siwek 20 L spherical chamber were elucidated using computational fluid dynamics (CFD) simulation. The dust injected at 21 bar from the bottom of the chamber was observed to move in an upward direction until it hit the wall and recirculated, then dispersed all over the chamber. The turbulent kinetic energy and velocity magnitude in the camber were observed to increase significantly in the first 20 ms, then reduce thereafter. It was found that the rice flour explosibility is much higher at a higher ignition delay time (tv) of >60 ms, while the lowest explosibility was observed at 20 ms due to the low concentration of dust at the point of ignition. Contrary to the explosibility, the maximum explosion overpressure (Pmax) of dried rice flour is the highest at the tv of 20 ms compared to those obtained at 60 and 100 ms, owing to the densely packed dust at the centre of the chamber. This study may provide a useful insight into the dust explosibility of rice flour dust cloud. |
| first_indexed | 2025-02-19T02:39:37Z |
| format | Article |
| id | UMPir43580 |
| institution | Universiti Malaysia Pahang |
| language | English English |
| last_indexed | 2025-02-19T02:39:37Z |
| publishDate | 2025 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir435802025-01-15T07:49:10Z http://umpir.ump.edu.my/id/eprint/43580/ Elucidating the role of dust concentrations and initial turbulence on rice flour explosion Wan Zaiton, Wan Sulaiman Mohd Fadzil, Mohd Idris Jolius, Gimbun Q Science (General) QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology The explosibility and severity characteristics of rice flour at different concentrations and ignition delay times were investigated experimentally. Meanwhile, the turbulent flow and dust dispersion that affect the dust explosion in a Siwek 20 L spherical chamber were elucidated using computational fluid dynamics (CFD) simulation. The dust injected at 21 bar from the bottom of the chamber was observed to move in an upward direction until it hit the wall and recirculated, then dispersed all over the chamber. The turbulent kinetic energy and velocity magnitude in the camber were observed to increase significantly in the first 20 ms, then reduce thereafter. It was found that the rice flour explosibility is much higher at a higher ignition delay time (tv) of >60 ms, while the lowest explosibility was observed at 20 ms due to the low concentration of dust at the point of ignition. Contrary to the explosibility, the maximum explosion overpressure (Pmax) of dried rice flour is the highest at the tv of 20 ms compared to those obtained at 60 and 100 ms, owing to the densely packed dust at the centre of the chamber. This study may provide a useful insight into the dust explosibility of rice flour dust cloud. Elsevier Ltd 2025 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/43580/1/Wan%20Zaiton%202025%20powtech2.pdf pdf en http://umpir.ump.edu.my/id/eprint/43580/7/Elucidating%20the%20clinker-based%20catalyst%20deactivation%20for%20biodiesel%20production%20in%20a%20continuous%20microwave-assisted%20reactor_abs.pdf Wan Zaiton, Wan Sulaiman and Mohd Fadzil, Mohd Idris and Jolius, Gimbun (2025) Elucidating the role of dust concentrations and initial turbulence on rice flour explosion. Powder Technology, 453 (120653). pp. 1-12. ISSN 0032-5910. (Published) https://doi.org/10.1016/j.powtec.2025.120653 https://doi.org/10.1016/j.powtec.2025.120653 |
| spellingShingle | Q Science (General) QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology Wan Zaiton, Wan Sulaiman Mohd Fadzil, Mohd Idris Jolius, Gimbun Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title | Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title_full | Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title_fullStr | Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title_full_unstemmed | Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title_short | Elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| title_sort | elucidating the role of dust concentrations and initial turbulence on rice flour explosion |
| topic | Q Science (General) QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/43580/1/Wan%20Zaiton%202025%20powtech2.pdf http://umpir.ump.edu.my/id/eprint/43580/7/Elucidating%20the%20clinker-based%20catalyst%20deactivation%20for%20biodiesel%20production%20in%20a%20continuous%20microwave-assisted%20reactor_abs.pdf |
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