NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS
Numerical investigations of unsteady natural convection heat transfer through a fluid-saturated porous media in inclined cylindrical enclosure are studied by solving the governing (3-D) Darcy-Boussinesq equations using finite difference method. The momentum equation of flow was solved by Relaxation...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2011-04-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2918 |
| _version_ | 1797301164570574848 |
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| author | Ihsan Y. Hussain Mohammad Mahdie Saleh |
| author_facet | Ihsan Y. Hussain Mohammad Mahdie Saleh |
| author_sort | Ihsan Y. Hussain |
| collection | DOAJ |
| description |
Numerical investigations of unsteady natural convection heat transfer through a fluid-saturated porous
media in inclined cylindrical enclosure are studied by solving the governing (3-D) Darcy-Boussinesq
equations using finite difference method. The momentum equation of flow was solved by Relaxation method and the energy equation by using Alternating Direction Implicit (ADI) method. The problem is analyzed for modified Rayleigh number with range of (50-300),angles of inclination (0°,25°,45°60°90°), amplitude of sinusoidal temperature (0.2, 0.4, 0.8) and period (0.005, 0.01, 0.02). Results indicate an increase in the heat transfer with increasing of Rayleigh number, time, amplitude, angle of inclination and period. Also average and local Nusselt number were calculated and it is found that Maximum temperature and velocity occur at angle α=45 and this indicate a strong buoyancy force effect on convective flow.
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| first_indexed | 2024-03-07T23:18:33Z |
| format | Article |
| id | doaj.art-ff7d1b5925384c7aa62165c71c01d511 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-07T23:18:33Z |
| publishDate | 2011-04-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-ff7d1b5925384c7aa62165c71c01d5112024-02-21T09:48:42ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392011-04-01170210.31026/j.eng.2011.02.12NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONSIhsan Y. HussainMohammad Mahdie Saleh Numerical investigations of unsteady natural convection heat transfer through a fluid-saturated porous media in inclined cylindrical enclosure are studied by solving the governing (3-D) Darcy-Boussinesq equations using finite difference method. The momentum equation of flow was solved by Relaxation method and the energy equation by using Alternating Direction Implicit (ADI) method. The problem is analyzed for modified Rayleigh number with range of (50-300),angles of inclination (0°,25°,45°60°90°), amplitude of sinusoidal temperature (0.2, 0.4, 0.8) and period (0.005, 0.01, 0.02). Results indicate an increase in the heat transfer with increasing of Rayleigh number, time, amplitude, angle of inclination and period. Also average and local Nusselt number were calculated and it is found that Maximum temperature and velocity occur at angle α=45 and this indicate a strong buoyancy force effect on convective flow. https://joe.uobaghdad.edu.iq/index.php/main/article/view/2918Natural Convection; Cylindrical Enclosure; Porous Media; Sinusoidal |
| spellingShingle | Ihsan Y. Hussain Mohammad Mahdie Saleh NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS Journal of Engineering Natural Convection; Cylindrical Enclosure; Porous Media; Sinusoidal |
| title | NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS |
| title_full | NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS |
| title_fullStr | NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS |
| title_full_unstemmed | NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS |
| title_short | NATURAL CONVECTION IN CONFINED CYLINDRICAL ENCLOSURE OF POROUS MEDIA WITH CONSTANT AND PERIODIC WALL TEMPERATURE BOUNDARY CONDITIONS |
| title_sort | natural convection in confined cylindrical enclosure of porous media with constant and periodic wall temperature boundary conditions |
| topic | Natural Convection; Cylindrical Enclosure; Porous Media; Sinusoidal |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2918 |
| work_keys_str_mv | AT ihsanyhussain naturalconvectioninconfinedcylindricalenclosureofporousmediawithconstantandperiodicwalltemperatureboundaryconditions AT mohammadmahdiesaleh naturalconvectioninconfinedcylindricalenclosureofporousmediawithconstantandperiodicwalltemperatureboundaryconditions |