Lattice Boltzmann Methods: Fundamentals and Applications

A special issue of Fluids (ISSN 2311-5521).

Deadline for manuscript submissions: 31 May 2024 | Viewed by 593

Special Issue Editor

Experimental and Computational Engineering Group, Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
Interests: fluid dynamics; numerical method; electrochemistry; machine learning
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Lattice Boltzamnn Method (LBM) has developed rapidly in the past 20 years. It has been utilized in various application areas, and it shows impressive advantages in different aspects, such as high efficiency for massive parallel computing, complicated geometry, and multi-phase flow. This Special Issue of Fluids is dedicated to the recent advances in the numerical approaches and applications of LBM. The studies relating to LBM include, but are not limited to, parallel computing, graphic processing unit (GPU) acceleration, new boundary condition treatments, unstructured mesh, flow for complicated geometries, multi-phase flow, multi-physics and multi-scale applications, etc.

Dr. Jie Bao
Guest Editor

Manuscript Submission Information

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Keywords

  • parallel computing
  • GPU acceleration
  • boundary condition treatments
  • unstructured mesh
  • multi-phase flow
  • multi-physics
  • multi-scale

Published Papers (1 paper)

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Research

15 pages, 2189 KiB  
Article
Distinctions of the Emergence of Convective Flows at the “Diffusion–Convections” Boundary in Isothermal Ternary Gas Mixtures with Carbon Dioxide
Fluids 2024, 9(2), 47; https://doi.org/10.3390/fluids9020047 - 12 Feb 2024
Viewed by 420
Abstract
This study discusses the influence of the composition of a ternary gas mixture on the possibility of occurrence of convective instability under isothermal conditions due to the difference in the diffusion abilities of the components. A numerical study was carried out to study [...] Read more.
This study discusses the influence of the composition of a ternary gas mixture on the possibility of occurrence of convective instability under isothermal conditions due to the difference in the diffusion abilities of the components. A numerical study was carried out to study the change in “diffusion–concentration gravitational convection” modes in an isothermal three-component gas mixture He + CO2 − N2. The mixing process in the system under study was modeled at different initial carbon dioxide contents. To carry out a numerical experiment, a mathematical algorithm based on the D2Q9 model of lattice Boltzmann equations was used for modeling the flow of gases. We show that the model presented in the paper allows one to study the occurrence of convective structures at different heavy component contents (carbon dioxide). It has been established that in the system under study, the instability of the mechanical equilibrium occurs when the content of carbon dioxide in the mixture is more than 0.3 mole fractions. The characteristic times for the onset of convective instability and the subsequent creation of structural formations, the values of which depend on the initial content of carbon dioxide in the mixture, have been determined. Distributions of concentration, pressure and kinetic energy that allow one to specify the types of mixing and explain the occurrence of convection for a situation where, at the initial moment of time, the density of the gas mixture in the upper part of the diffusion channel is less than in the lower one, were obtained. Full article
(This article belongs to the Special Issue Lattice Boltzmann Methods: Fundamentals and Applications)
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