Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium
This paper derives analytical solutions of fully developed natural convection heat and mass transfer in a vertical annular non-Darcy porous medium. This investigation extends the work of Cheng (2006) to a situation where Soret effect is present and the flow is both aided and opposed. The influence o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-06-01
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| Series: | Ain Shams Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447914001609 |
| _version_ | 1818440382070915072 |
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| author | Basant Kumar Jha Sylvester Bakut Joseph Abiodun Olusegun Ajibade |
| author_facet | Basant Kumar Jha Sylvester Bakut Joseph Abiodun Olusegun Ajibade |
| author_sort | Basant Kumar Jha |
| collection | DOAJ |
| description | This paper derives analytical solutions of fully developed natural convection heat and mass transfer in a vertical annular non-Darcy porous medium. This investigation extends the work of Cheng (2006) to a situation where Soret effect is present and the flow is both aided and opposed. The influence of the controlling parameters on the flow characteristics has been seen to be higher for double diffusion in the absence of Soret effect than in the presence of Soret effect. It is found that the presence of Soret effect reduces the dependence of the volume flow rate, the total heat rate and the total species rate on the inner radius-gap ratio and on the modified Darcy number. |
| first_indexed | 2024-12-14T18:11:28Z |
| format | Article |
| id | doaj.art-bd031491875447418067a2526e302cd6 |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-12-14T18:11:28Z |
| publishDate | 2015-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-bd031491875447418067a2526e302cd62022-12-21T22:52:17ZengElsevierAin Shams Engineering Journal2090-44792015-06-016262963710.1016/j.asej.2014.11.004Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous mediumBasant Kumar Jha0Sylvester Bakut Joseph1Abiodun Olusegun Ajibade2Department of Mathematics, Ahmadu Bello University, Zaria, NigeriaDepartment of Mathematics and Statistics, Nuhu Bamalli Polytechnic, Zaria, NigeriaDepartment of Mathematics, Ahmadu Bello University, Zaria, NigeriaThis paper derives analytical solutions of fully developed natural convection heat and mass transfer in a vertical annular non-Darcy porous medium. This investigation extends the work of Cheng (2006) to a situation where Soret effect is present and the flow is both aided and opposed. The influence of the controlling parameters on the flow characteristics has been seen to be higher for double diffusion in the absence of Soret effect than in the presence of Soret effect. It is found that the presence of Soret effect reduces the dependence of the volume flow rate, the total heat rate and the total species rate on the inner radius-gap ratio and on the modified Darcy number.http://www.sciencedirect.com/science/article/pii/S2090447914001609Modified Darcy numberNatural convectionAnnular ductPorous mediumDouble diffusionSoret effect |
| spellingShingle | Basant Kumar Jha Sylvester Bakut Joseph Abiodun Olusegun Ajibade Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium Ain Shams Engineering Journal Modified Darcy number Natural convection Annular duct Porous medium Double diffusion Soret effect |
| title | Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium |
| title_full | Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium |
| title_fullStr | Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium |
| title_full_unstemmed | Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium |
| title_short | Role of thermal diffusion on double-diffusive natural convection in a vertical annular porous medium |
| title_sort | role of thermal diffusion on double diffusive natural convection in a vertical annular porous medium |
| topic | Modified Darcy number Natural convection Annular duct Porous medium Double diffusion Soret effect |
| url | http://www.sciencedirect.com/science/article/pii/S2090447914001609 |
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