Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium
Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended...
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| Format: | Article |
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Semnan University
2014-10-01
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| Series: | Journal of Heat and Mass Transfer Research |
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| Online Access: | https://jhmtr.semnan.ac.ir/article_183_cb5d247f1c29c0c2ac9ae02e10b034fe.pdf |
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| author | Ariyan Zare Ghadi Ali Haghighi Asl Mohammad Sadegh Valipour |
| author_facet | Ariyan Zare Ghadi Ali Haghighi Asl Mohammad Sadegh Valipour |
| author_sort | Ariyan Zare Ghadi |
| collection | DOAJ |
| description | Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and larger curved walls are supposed to be hot andcold sources, respectively. Other two walls are insulated. The numerical solution has beenobtained based on the finite volume methodology via staggered grid system, which will beexplained in detail in its respective section. Finally, at the result section the effects of allpertinent parameters i.e. Grashof number, Lewis number, Darcy number, and Buoyancy ratioon the fluid motion and medium thermal behavior have been illustratively discussed. Resultsreveal that an increasing in Lewis number has a negative effect on heat transfer, while it hasa positive impact on mass transfer. It is also seen that the flow intensity is increased bydecreasing Lewis number. In addition, it is observed that for the aiding flow case, averageNu and Sh numbers decrease with increasing buoyancy ratio, while for opposing flow casesNu and Sh augment with decreasing buoyancy ratio. |
| first_indexed | 2024-04-24T23:13:01Z |
| format | Article |
| id | doaj.art-c8945c56904944c7a25d26b11283913a |
| institution | Directory Open Access Journal |
| issn | 2345-508X 2383-3068 |
| language | English |
| last_indexed | 2024-04-24T23:13:01Z |
| publishDate | 2014-10-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Heat and Mass Transfer Research |
| spelling | doaj.art-c8945c56904944c7a25d26b11283913a2024-03-17T08:03:10ZengSemnan UniversityJournal of Heat and Mass Transfer Research2345-508X2383-30682014-10-0112839110.22075/jhmtr.2014.183183Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous mediumAriyan Zare Ghadi0Ali Haghighi Asl1Mohammad Sadegh Valipour2Faculty of Mechanical Engineering, Semnan University, Semnan, IranFaculty of Chemical Engineering, Semnan University, Semnan, IranFaculty of Mechanical Engineering, Semnan University, Semnan, IranNumerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and larger curved walls are supposed to be hot andcold sources, respectively. Other two walls are insulated. The numerical solution has beenobtained based on the finite volume methodology via staggered grid system, which will beexplained in detail in its respective section. Finally, at the result section the effects of allpertinent parameters i.e. Grashof number, Lewis number, Darcy number, and Buoyancy ratioon the fluid motion and medium thermal behavior have been illustratively discussed. Resultsreveal that an increasing in Lewis number has a negative effect on heat transfer, while it hasa positive impact on mass transfer. It is also seen that the flow intensity is increased bydecreasing Lewis number. In addition, it is observed that for the aiding flow case, averageNu and Sh numbers decrease with increasing buoyancy ratio, while for opposing flow casesNu and Sh augment with decreasing buoyancy ratio.https://jhmtr.semnan.ac.ir/article_183_cb5d247f1c29c0c2ac9ae02e10b034fe.pdffvm methoddouble-diffusive convectionarc-shaped cavityporous media |
| spellingShingle | Ariyan Zare Ghadi Ali Haghighi Asl Mohammad Sadegh Valipour Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium Journal of Heat and Mass Transfer Research fvm method double-diffusive convection arc-shaped cavity porous media |
| title | Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| title_full | Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| title_fullStr | Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| title_full_unstemmed | Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| title_short | Numerical modelling of double-diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| title_sort | numerical modelling of double diffusive natural convection within an arc shaped enclosure filled with a porous medium |
| topic | fvm method double-diffusive convection arc-shaped cavity porous media |
| url | https://jhmtr.semnan.ac.ir/article_183_cb5d247f1c29c0c2ac9ae02e10b034fe.pdf |
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