Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media
The lattice Boltzmann method (LBM) is applied to a generalised isotropic porous media model in a square geometry by introducing a force term to the evolution equation and a porosity to the density equilibrium distribution function. The temperature field is obtained by simulating a simplified thermal...
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2010
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my.utm.265962018-10-31T12:32:55Z http://eprints.utm.my/id/eprint/26596/ Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media Che Sidek, Nor Azwadi Mohd. Irwan, M. A. TJ Mechanical engineering and machinery The lattice Boltzmann method (LBM) is applied to a generalised isotropic porous media model in a square geometry by introducing a force term to the evolution equation and a porosity to the density equilibrium distribution function. The temperature field is obtained by simulating a simplified thermal model which uses less velocity directions for the equilibrium distribution function and neglects the compression work done by the pressure and the viscous heat dissipation. The reliability of this model for natural convective heat transfer simulation is studied by comparing with results from previous simulations at a porosity value, e = 0.9999. The model is then used for simulation at e = 0.4, 0.6 and 0.9 at three different Rayleigh numbers. Comparison of solutions with previous works confirms the applicability of the present approach. World Scientific and Engineering Academy and Society (WSEAS) Press. 2010 Article PeerReviewed Che Sidek, Nor Azwadi and Mohd. Irwan, M. A. (2010) Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media. WSEAS Transactions on Fluid Mechanics, 5 (3). 186 - 195. ISSN 1790-5087 |
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TJ Mechanical engineering and machinery Che Sidek, Nor Azwadi Mohd. Irwan, M. A. Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
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The lattice Boltzmann method (LBM) is applied to a generalised isotropic porous media model in a square geometry by introducing a force term to the evolution equation and a porosity to the density equilibrium distribution function. The temperature field is obtained by simulating a simplified thermal model which uses less velocity directions for the equilibrium distribution function and neglects the compression work done by the pressure and the viscous heat dissipation. The reliability of this model for natural convective heat transfer simulation is studied by comparing with results from previous simulations at a porosity value, e = 0.9999. The model is then used for simulation at e = 0.4, 0.6 and 0.9 at three different Rayleigh numbers. Comparison of solutions with previous works confirms the applicability of the present approach. |
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Article |
author |
Che Sidek, Nor Azwadi Mohd. Irwan, M. A. |
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Che Sidek, Nor Azwadi Mohd. Irwan, M. A. |
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Che Sidek, Nor Azwadi |
title |
Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
title_short |
Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
title_full |
Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
title_fullStr |
Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
title_full_unstemmed |
Simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
title_sort |
simplified mesoscale lattice boltzmann numerical model for prediction of natural convection in a square enclosure filled with homogeneous porous media |
publisher |
World Scientific and Engineering Academy and Society (WSEAS) Press. |
publishDate |
2010 |
url |
http://eprints.utm.my/id/eprint/26596/ |
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1643647805005234176 |
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13.160551 |