Numerical study on mixed convection heat transfer in a porous L-shaped cavity
| Autor: | M. Rizwanur Rahman, Md. Mustafizur Rahman, Talaat A. Ibrahim, Sourav Saha, Satyajit Mojumder, Khan Md. Rabbi |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Computer Networks and Communications 020209 energy Grashof number Porous media Thermodynamics 02 engineering and technology Heat transfer coefficient Biomaterials L-shaped cavity 0203 mechanical engineering 0202 electrical engineering electronic engineering information engineering Mixed convection Civil and Structural Engineering Fluid Flow and Transfer Processes Natural convection Mechanical Engineering Darcy number Metals and Alloys Film temperature Rayleigh number Nusselt number Electronic Optical and Magnetic Materials Forced convection 020303 mechanical engineering & transports Lid driven Hardware and Architecture lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | Engineering Science and Technology, an International Journal, Vol 20, Iss 1, Pp 272-282 (2017) |
| ISSN: | 2215-0986 |
| Popis: | A lid-driven L -shaped cavity filled with a porous medium is analyzed. The Galerkin weighted residual method is applied to obtain numerical solutions. The effect of the Reynolds number ( Re = 1–100), Grashof number ( Gr = 10 3 –10 5 ) and Darcy number ( Da = 10 −5 –10 −3 ) on the velocity and temperature fields is examined. For the vertical wall, a higher heat transfer rate is observed when a low Grashof number, higher Darcy number and higher Reynolds number are applied, but the opposite characteristic is found in the horizontal wall. It is evident that heat transfer decreases up to 63% in the horizontal wall when the flow has a high Reynolds number ( Re = 100). |
| Databáze: | OpenAIRE |
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