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- W2545955574 abstract "We investigate the effect of two parallel porous walls, consisting of Darcy number and the porosity of porous medium, on behaviour of turbulent shear flows as well as skin-friction drag. The direct numerical simulation of turbulent channel flows with porous surface using lattice Boltzmann method (LBM) was performed. The Darcy-Brinkman-Forcheimer (DBF) acting force term is added in the lattice Boltzmann equation in order to simulate the turbulent flows bounded by porous walls. It is found that there are two opposite trends (enhancement or reduction) for the porous medium to modify the intensities of velocity fluctuations and the Reynolds stresses in near wall region. Meanwhile, the parametric study shows the dependency of flow modification on the Darcy number and the porosity of porous medium. Our results on statistical quantities for flow field show that, with respect to conventional impermeable wall, the degree of turbulence modification does not depend on any simple set of parameters obviously." @default.
- W2545955574 created "2016-11-04" @default.
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- W2545955574 date "2016-04-01" @default.
- W2545955574 modified "2023-09-27" @default.
- W2545955574 title "Numerical Analysis of Porous Wall-Bounded Turbulent Flows Based on the Lattice Boltzmann Method" @default.
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- W2545955574 doi "https://doi.org/10.11159/icmfht16.108" @default.
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