Natural Convection in a Hydrodynamically and Thermally Anisotropic Non-Rectangular Porous Cavity: Effect of Internal Heat Generation/Absorption
| Autor: | Beer S. Bhadauria, Ashok K. Singh, Nirmal C. Sacheti, Pallath Chandran |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
thermal diffusivity 0208 environmental biotechnology natural convection Transportation 02 engineering and technology Thermal diffusivity 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics 76d99 darcy law 0103 physical sciences Porosity Anisotropy Civil and Structural Engineering 76s05 Fluid Flow and Transfer Processes Darcy's law Natural convection 76r10 Mechanics of engineering. Applied mechanics trapezoidal cavity porous medium Mechanics TA349-359 020801 environmental engineering heat source/sink permeability Internal heating Porous medium |
| Zdroj: | International Journal of Applied Mechanics and Engineering, Vol 23, Iss 3, Pp 595-609 (2018) |
| ISSN: | 2353-9003 1734-4492 |
| Popis: | Laminar natural convection in a trapezoidal porous vertical cavity has been investigated in this work. It is assumed that the porous enclosure is filled up with a permeable material subject to hydrodynamic and thermal anisotropy, the flow being governed by the Darcy law as applicable to a non-isotropic medium. It is further assumed that (i) there is heating at the left vertical wall and cooling at the right wall of the enclosure and (ii) the flow domain is subject to the presence of heat source or heat sink. The partial differential equations governing the resulting free convection have been solved numerically in the non-dimensional forms. There arises a number of parameters relating to buoyancy, internal heating, cavity aspect ratio and inclination of the upper surface to the horizontal. The influence of these parameters has been illustrated and analyzed through contours of streamlines and isotherms. We have also discussed the role of internal heating as well as anisotropy on the heat transfer characteristics. |
| Databáze: | OpenAIRE |
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