Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media
Buoyancy-driven convective heat and mass transfer in boundary layer flow of a viscoelastic Jeffrey fluid from a permeable isothermal sphere embedded in a porous medium is studied. Thermal radiation flux and heat generation/absorption are also incorporated in the model. A non-Darcy drag force model i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-09-01
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| Series: | Ain Shams Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447915000416 |
| _version_ | 1818598136642273280 |
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| author | S. Abdul Gaffar V. Ramachandra Prasad E. Keshava Reddy O. Anwar Bég |
| author_facet | S. Abdul Gaffar V. Ramachandra Prasad E. Keshava Reddy O. Anwar Bég |
| author_sort | S. Abdul Gaffar |
| collection | DOAJ |
| description | Buoyancy-driven convective heat and mass transfer in boundary layer flow of a viscoelastic Jeffrey fluid from a permeable isothermal sphere embedded in a porous medium is studied. Thermal radiation flux and heat generation/absorption are also incorporated in the model. A non-Darcy drag force model is employed to simulate the effects of linear porous media drag and second order Forchheimer drag. The Rosseland diffusion algebraic approximation is utilized to simulate thermal radiation effects. The non-dimensionalized boundary layer equations are solved using implicit, finite-difference scheme. The influence of Darcy number (Da), Deborah number (De), ratio of relaxation to retardation times (λ), radiation parameter (F), Forchheimer inertial parameter (Λ) and heat generation/absorption parameter (Δ), on normalized velocity, temperature, concentration, skin friction, heat and mass transfer rates are also studied. The present study has applications in the storage of nuclear waste materials. |
| first_indexed | 2024-12-16T11:58:54Z |
| format | Article |
| id | doaj.art-76321dea57c242499027714e5fef575f |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-12-16T11:58:54Z |
| publishDate | 2015-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-76321dea57c242499027714e5fef575f2022-12-21T22:32:30ZengElsevierAin Shams Engineering Journal2090-44792015-09-01631009103010.1016/j.asej.2015.02.014Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous mediaS. Abdul Gaffar0V. Ramachandra Prasad1E. Keshava Reddy2O. Anwar Bég3Department of Mathematics, Salalah College of Technology, Salalah, OmanDepartment of Mathematics, Madanapalle Institute of Technology and Science, Madanapalle 517325, IndiaDepartment of Mathematics, Jawaharlal Nehru Technological University Anantapuramu, Anantapuramu 515002, IndiaGort Engovation Research (CFD), 15 Southmere Avenue, Great Horton, Bradford BD7 3NU, West Yorkshire, UKBuoyancy-driven convective heat and mass transfer in boundary layer flow of a viscoelastic Jeffrey fluid from a permeable isothermal sphere embedded in a porous medium is studied. Thermal radiation flux and heat generation/absorption are also incorporated in the model. A non-Darcy drag force model is employed to simulate the effects of linear porous media drag and second order Forchheimer drag. The Rosseland diffusion algebraic approximation is utilized to simulate thermal radiation effects. The non-dimensionalized boundary layer equations are solved using implicit, finite-difference scheme. The influence of Darcy number (Da), Deborah number (De), ratio of relaxation to retardation times (λ), radiation parameter (F), Forchheimer inertial parameter (Λ) and heat generation/absorption parameter (Δ), on normalized velocity, temperature, concentration, skin friction, heat and mass transfer rates are also studied. The present study has applications in the storage of nuclear waste materials.http://www.sciencedirect.com/science/article/pii/S2090447915000416Non-Newtonian Jeffreys fluidRosseland thermal radiation modelIsothermal sphereKeller-box numerical methodnon-Darcy flowPorous media |
| spellingShingle | S. Abdul Gaffar V. Ramachandra Prasad E. Keshava Reddy O. Anwar Bég Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media Ain Shams Engineering Journal Non-Newtonian Jeffreys fluid Rosseland thermal radiation model Isothermal sphere Keller-box numerical method non-Darcy flow Porous media |
| title | Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media |
| title_full | Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media |
| title_fullStr | Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media |
| title_full_unstemmed | Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media |
| title_short | Thermal radiation and heat generation/absorption effects on viscoelastic double-diffusive convection from an isothermal sphere in porous media |
| title_sort | thermal radiation and heat generation absorption effects on viscoelastic double diffusive convection from an isothermal sphere in porous media |
| topic | Non-Newtonian Jeffreys fluid Rosseland thermal radiation model Isothermal sphere Keller-box numerical method non-Darcy flow Porous media |
| url | http://www.sciencedirect.com/science/article/pii/S2090447915000416 |
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