Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows
This paper deals with numerical study of semi-finite incompressible flow of air over two blocks with different heights in the presence of a condensing-source, dispensing- contaminant in the flow, in both steady and unsteady states. The numerical solution of governing PDE equations are constructed by...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Materials and Energy Research Center (MERC)
2016-02-01
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| Series: | Journal of Renewable Energy and Environment |
| Subjects: | |
| Online Access: | https://www.jree.ir/article_70079_8fb2aee7379c42ae5854619e94267458.pdf |
| _version_ | 1797790453593014272 |
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| author | M. Ziaei-Rad Iman Samea |
| author_facet | M. Ziaei-Rad Iman Samea |
| author_sort | M. Ziaei-Rad |
| collection | DOAJ |
| description | This paper deals with numerical study of semi-finite incompressible flow of air over two blocks with different heights in the presence of a condensing-source, dispensing- contaminant in the flow, in both steady and unsteady states. The numerical solution of governing PDE equations are constructed by a finite-volume method applied on structured grid arrangement. The effects of air flow velocity, contaminant source length and position, and the blocks height ratio on the concentration distribution, the mass transfer level and the time of transportation are studied. The results indicate that by increasing the inflow Reynolds number, the amount of contamination reaching the blocks and also the amount remaining between them decrease, while the mass transfer rate increases. It is shown that the closer the contaminant source to the blocks, the higher the mean concentration accumulating between the two blocks. It is also found that increasing the blocks height ratio makes an ascending trend to the time for the arrival of contaminant to the blocks walls, though the slopes of time-lines are different for each case. |
| first_indexed | 2024-03-13T02:04:50Z |
| format | Article |
| id | doaj.art-03acd4fca494471e88dfade6f9ea090b |
| institution | Directory Open Access Journal |
| issn | 2423-5547 2423-7469 |
| language | English |
| last_indexed | 2024-03-13T02:04:50Z |
| publishDate | 2016-02-01 |
| publisher | Materials and Energy Research Center (MERC) |
| record_format | Article |
| series | Journal of Renewable Energy and Environment |
| spelling | doaj.art-03acd4fca494471e88dfade6f9ea090b2023-07-01T09:11:53ZengMaterials and Energy Research Center (MERC)Journal of Renewable Energy and Environment2423-55472423-74692016-02-013181610.30501/jree.2016.7007970079Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady FlowsM. Ziaei-Rad0Iman Samea1Department of Mechanical Engineering, University of Isfahan, Isfahan, IranDepartment of Mechanical Engineering, Shahrekord University, Shahrekord, IranThis paper deals with numerical study of semi-finite incompressible flow of air over two blocks with different heights in the presence of a condensing-source, dispensing- contaminant in the flow, in both steady and unsteady states. The numerical solution of governing PDE equations are constructed by a finite-volume method applied on structured grid arrangement. The effects of air flow velocity, contaminant source length and position, and the blocks height ratio on the concentration distribution, the mass transfer level and the time of transportation are studied. The results indicate that by increasing the inflow Reynolds number, the amount of contamination reaching the blocks and also the amount remaining between them decrease, while the mass transfer rate increases. It is shown that the closer the contaminant source to the blocks, the higher the mean concentration accumulating between the two blocks. It is also found that increasing the blocks height ratio makes an ascending trend to the time for the arrival of contaminant to the blocks walls, though the slopes of time-lines are different for each case.https://www.jree.ir/article_70079_8fb2aee7379c42ae5854619e94267458.pdfcontaminant dispersionblocksunsteady flownumerical study |
| spellingShingle | M. Ziaei-Rad Iman Samea Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows Journal of Renewable Energy and Environment contaminant dispersion blocks unsteady flow numerical study |
| title | Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows |
| title_full | Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows |
| title_fullStr | Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows |
| title_full_unstemmed | Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows |
| title_short | Numerical Investigation on Contaminant Dispersion from a Source over the Blocks in Steady and Unsteady Flows |
| title_sort | numerical investigation on contaminant dispersion from a source over the blocks in steady and unsteady flows |
| topic | contaminant dispersion blocks unsteady flow numerical study |
| url | https://www.jree.ir/article_70079_8fb2aee7379c42ae5854619e94267458.pdf |
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