Grid refinement is used to reduce computing costs while maintaining the precision of fluid simulation. In lattice Boltzmann method (LBM), grid often uses interpolated values. Here, we developed a in which interpolation space and time not required. For this purpose, moment matching condition rescaled nonequilibrium part populations, thereby developing recalibration procedure that allows for tran...

This paper presents a numerical investigation of the propagation acoustic waves generated by linear source using lattice Boltzmann method (LBM). The main objective this study is to compute sound pressure and force produced rectangular located at center west wall cavity, filled with water. discretized into set point sources emitting according method. interference between cylindrical creates an b...

[1] The lattice Boltzmann method (LBM) has emerged as a powerful tool for simulating the behavior of multiphase fluid systems in complex pore networks. Specifically, the single component multiphase LBM can simulate the interfacial phenomena of surface tension and adsorption and thus be used for modeling fluids such as water and its vapor in porous media. This paper provides an introduction to L...

We propose a numerical approach based on the Lattice-Boltzmann method (LBM) for dealing with mesh refinement of Non-uniform Staggered Cartesian Grid. We explain, in detail, the strategy for mapping LBM over such geometries. The main benefit of this approach, compared to others, consists of solving all fluid units only once per time-step, and also reducing considerably the complexity of the comm...

Simplicity of coding is usually an appealing feature of the lattice-Boltzmann method (LBM). Conventional implementations of LBM are often based on the two-lattice or the two-step algorithm, which however suffer from high memory consumption and poor computational performance, respectively. The aim of this work was to identify implementations of LBM that would achieve high computational performan...

Keywords: Lattice Boltzmann Method D2Q9 model Two-sided square cavity Four-sided square cavity Bounce-back boundary condition a b s t r a c t This work is concerned with the computation of two-and four-sided lid-driven square cavity flows and also two-sided rectangular cavity flows with parallel wall motion by the Lattice Boltzmann Method (LBM) to obtain multiple stable solutions. In the two-si...

background: the airway surface liquid (asl), which is a fluid layer coating the interior epithelial surface of the bronchi and bronchiolesis, plays an important defensive role against foreign particles and chemicals entering lungs. objective: numerical investigation has been employed to solve two-layer model consisting of mucus layer as a viscoelastic fluid and periciliary liquid layer as a newt...

This work presents a framework of coupling polygonal discrete elements and the lattice Boltzmann method using direct forcing immersed boundary scheme. In this technique, an energy-conserving contact algorithm is utilized to handle interactions between convex concave particles. The surface polygon represented by points which includes vertices particles and/or interpolated from vertices. fluid-pa...

A new coupling method, immersed moving boundary–discrete element method–lattice Boltzmann method (IMB-DEM-LBM), is proposed to simulate particle flow for application in soil mechanics or coastal engineering. In this study, LBM fluid simulated on the regular Eulerian grid and Lagrangian motion governed by DEM while IMB couples two algorithms. The promising robust as it resolves numerical instabi...