Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation
In this paper, we investigate the combined effect of internal heating and time periodic gravity modulation in a viscoelastic fluid saturated porous medium by reducing the problem into a complex non-autonomous Ginzgburg-Landau equation. Weak nonlinear stability analysis has been performed by using po...
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University of Zielona Góra
2016-12-01
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| Series: | International Journal of Applied Mechanics and Engineering |
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| Online Access: | https://www.ijame-poland.com/Stability-Analysis-and-Internal-Heating-Effect-on-Oscillatory-Convection-in-a-Viscoelastic,167089,0,2.html |
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| author | B.S. Bhadauria M.K. Singh A. Singh B.K. Singh P. Kiran |
| author_facet | B.S. Bhadauria M.K. Singh A. Singh B.K. Singh P. Kiran |
| author_sort | B.S. Bhadauria |
| collection | DOAJ |
| description | In this paper, we investigate the combined effect of internal heating and time periodic gravity modulation in a viscoelastic fluid saturated porous medium by reducing the problem into a complex non-autonomous Ginzgburg-Landau equation. Weak nonlinear stability analysis has been performed by using power series expansion in terms of the amplitude of gravity modulation, which is assumed to be small. The Nusselt number is obtained in terms of the amplitude for oscillatory mode of convection. The influence of viscoelastic parameters on heat transfer has been discussed. Gravity modulation is found to have a destabilizing effect at low frequencies and a stabilizing effect at high frequencies. Finally, it is found that overstability advances the onset of convection, more with internal heating. The conditions for which the complex Ginzgburg-Landau equation undergoes Hopf bifurcation and the amplitude equation undergoes supercritical pitchfork bifurcation are studied. |
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| id | doaj.art-4f4828def3e54a38a0d127ad8f512f13 |
| institution | Directory Open Access Journal |
| issn | 1734-4492 2353-9003 |
| language | English |
| last_indexed | 2024-03-12T16:37:22Z |
| publishDate | 2016-12-01 |
| publisher | University of Zielona Góra |
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| series | International Journal of Applied Mechanics and Engineering |
| spelling | doaj.art-4f4828def3e54a38a0d127ad8f512f132023-08-08T14:47:15ZengUniversity of Zielona GóraInternational Journal of Applied Mechanics and Engineering1734-44922353-90032016-12-0121478580310.1515/ijame-2016-0046167089Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity ModulationB.S. Bhadauria0M.K. Singh1A. Singh2B.K. Singh3P. Kiran4Department of Applied Mathematics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, IndiaDepartment of Applied Mathematics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, IndiaDepartment of Applied Mathematics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, IndiaDepartment of Applied Mathematics, School of Physical Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, IndiaDepartment of Applied Mathematics, Rayalaseema University, Kurnool, Andhra Pradesh-518007, IndiaIn this paper, we investigate the combined effect of internal heating and time periodic gravity modulation in a viscoelastic fluid saturated porous medium by reducing the problem into a complex non-autonomous Ginzgburg-Landau equation. Weak nonlinear stability analysis has been performed by using power series expansion in terms of the amplitude of gravity modulation, which is assumed to be small. The Nusselt number is obtained in terms of the amplitude for oscillatory mode of convection. The influence of viscoelastic parameters on heat transfer has been discussed. Gravity modulation is found to have a destabilizing effect at low frequencies and a stabilizing effect at high frequencies. Finally, it is found that overstability advances the onset of convection, more with internal heating. The conditions for which the complex Ginzgburg-Landau equation undergoes Hopf bifurcation and the amplitude equation undergoes supercritical pitchfork bifurcation are studied.https://www.ijame-poland.com/Stability-Analysis-and-Internal-Heating-Effect-on-Oscillatory-Convection-in-a-Viscoelastic,167089,0,2.htmlnon-linear stability analysiscomplex ginzburg-landau equationgravity modulationinternal heatingbifurcation |
| spellingShingle | B.S. Bhadauria M.K. Singh A. Singh B.K. Singh P. Kiran Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation International Journal of Applied Mechanics and Engineering non-linear stability analysis complex ginzburg-landau equation gravity modulation internal heating bifurcation |
| title | Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation |
| title_full | Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation |
| title_fullStr | Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation |
| title_full_unstemmed | Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation |
| title_short | Stability Analysis and Internal Heating Effect on Oscillatory Convection in a Viscoelastic Fluid Saturated Porous Medium Under Gravity Modulation |
| title_sort | stability analysis and internal heating effect on oscillatory convection in a viscoelastic fluid saturated porous medium under gravity modulation |
| topic | non-linear stability analysis complex ginzburg-landau equation gravity modulation internal heating bifurcation |
| url | https://www.ijame-poland.com/Stability-Analysis-and-Internal-Heating-Effect-on-Oscillatory-Convection-in-a-Viscoelastic,167089,0,2.html |
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