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		题名	作者	年代	出处	被引量
	1	Kinetic Slip Boundary Condition for Isothermal Rarefied Gas Flows through Static Non-Planar Geometries Based on the Regularized Lattice-Boltzmann Method显示文摘The simulation of rarefied gasflows through complex porous media is chal-lenging due to the tortuousflow pathways inherent to such structures.The Lattice Boltzmann method(LBM)has been identified as a promising avenue to solveflows through complex geometries due to the simplicity of its scheme and its high parallel computational efficiency.It has been proposed to model the stress-strain relationship with the extended Navier-Stokes equations rather than attempting to directly solve the Boltzmann equation.However,a regularization technique is required tofilter out non-resolved higher-order components with a low-order velocity scheme.Although slip boundary conditions(BCs)have been proposed for the non-regularized multiple relaxation time LBM(MRT-LBM)for planar geometries,previous slip BCs have never been verified extensively with the regularization technique.In this work,following an extensive literature review on the imposition of slip BCs for rarefiedflows with the LBM,it is proven that earlier values for kinetic parameters developed to impose slip BCs are inaccurate for the regularized MRT-LBM and differ between the D2Q9 and D3Q15 schemes.The error was eliminated for planarflows and good agreement be-tween analytical solutions for arrays of cylinders and spheres was found with a wide range of Knudsen numbers.	Jean-Michel Tucny David Vidal Sebastien Leclaire Francois Bertrand	2022	Communications in Computational Physics2022，31，3：	0
	2	Lattice Boltzmann Modeling of Miscible Multicomponent Gas Mixtures in the Rarefied Regime显示文摘An extension to rarefied flow regimes of the lattice Boltzmann methodbased model for miscible mixtures developed by Vienne et al.(Physical Review E 100.2(2019):023309)is presented.The model is applied to study the gas phase separation phenomenon in mixture flows that traditional macroscopic approaches fail to predict.The extension includes a wall function approach with an empirical coefficient to define an effectivemean free path in solid geometries,which locally defines the kinematic viscosity and binary diffusion coefficients.The algorithm is also modified by a local multi-relaxation time collision operator and slip boundary conditions at solid walls.Gaseous mixture flow simulations are conducted through a 2D plane microchannel within the slip and early transition flow regimes.Despite a miscible gaseous phase,the mixture loses its homogeneity and independent velocity profiles for each component are observed in the rarefied regime and captured with the current modeling.In addition,the gas separation phenomenon increases with the rarefaction rate and the molecular mass ratio.The individual treatment of the species within mixture flows in the developed lattice Boltzmann model helps understanding the increasing independent behavior of the individual specieswithin themixture as the regime becomesmore rarefied.	Michel Ho Sami Ammar Sebastien Leclaire Marcelo Reggio Jean-Yves Trepanier	2022	Communications in Computational Physics2022，32，9：	0

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