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Non-dimensional lattice Boltzmann simulations on pore scale double diffusive natural convection in an enclosure filled with random porous media
Ng T.; Su Y.
2019-05-01
Source PublicationInternational Journal of Heat and Mass Transfer
ISSN00179310
Volume134Pages:521-538
Abstract

Double diffusive natural convection in an enclosure filled with random porous media has been simulated by a Non-dimensional Lattice Boltzmann method (NDLBM). The random structures with different porosities are generated by a Controllable Structure Generation Scheme (CSGS). The NDLBM and the CSGS with mesoscopic scale governing parameters enable the direct simulations of transient velocity, temperature and concentration fields in pore scale for random media of a wide range of porosities. Validations of the parallel codes have been done by comparing to natural convection in a pure fluid filled enclosure obtained by various methods. Distributions of pore scale velocities, temperatures, and concentrations are quantitatively shown. Effects of the governing parameters on the macroscopic Nusselt, Sherwood and Biot numbers are presented. The changes of physical properties including solid fluid interface effects are also discussed.

KeywordNatural Convection Non-dimensional Lattice Boltzmann Method Porosity Random Porous Media Volume Fraction
DOI10.1016/j.ijheatmasstransfer.2019.01.062
URLView the original
Indexed BySCI
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
WOS IDWOS:000462418300046
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Ng T.,Su Y.. Non-dimensional lattice Boltzmann simulations on pore scale double diffusive natural convection in an enclosure filled with random porous media[J]. International Journal of Heat and Mass Transfer,2019,134:521-538.
APA Ng T.,&Su Y..(2019).Non-dimensional lattice Boltzmann simulations on pore scale double diffusive natural convection in an enclosure filled with random porous media.International Journal of Heat and Mass Transfer,134,521-538.
MLA Ng T.,et al."Non-dimensional lattice Boltzmann simulations on pore scale double diffusive natural convection in an enclosure filled with random porous media".International Journal of Heat and Mass Transfer 134(2019):521-538.
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