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A Parallel Non-dimensional Lattice Boltzmann Simulation on Double Diffusion and Convection from Porous Structure Walls
Yan Su; Tiniao Ng
Conference Name16th International Heat Transfer Conference
Source PublicationProceedings of the 16th International Heat Transfer Conference
Conference Date2018-8
Conference PlaceBeijing, China

Transient heat and mass diffusion and convection from porous structure walls are simulated by mesoscopic scale parallel non-dimensional lattice Boltzmann method (P-NDLBM) simulations. Mesoscopic dimensionless governing parameters have been obtained by scaling analysis. Dimensionless relaxation times for density, temperature, and concentration distribution factions are related to mesoscopic governing parameters. Various kinds of porous wall structures composed by one phase of solid and one fluid phase of air are generated by the Controllable Structure Generation Scheme (CSGS) based on discrete Gaussian quadrature space and velocity. The heat and mass transfer patterns affected by the different thermal and mass diffusivity of the solid phases and the fluid phase are also studied. The double diffusion effects of the random structure walls with various porosities are compared. The present results are expected to give some guidance on heat and mass transfer inside and away from various random constructed building walls.

KeywordConvection Computational Methods Csgs Ndlbm Diffusion
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Document TypeConference paper
CollectionFaculty of Science and Technology
AffiliationDepartment of Electromechanical Engineering, University of Macau, Taipa, Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Yan Su,Tiniao Ng. A Parallel Non-dimensional Lattice Boltzmann Simulation on Double Diffusion and Convection from Porous Structure Walls[C],2018:1673-1678.
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