scholarly journals A Generalized Lattice Boltzmann Method for Three-Dimensional Incompressible Fluid Flow Simulation

2009 ◽  
Vol 2 (01) ◽  
Keyword(s):  
Fluid Flow ◽  
Incompressible Fluid ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Flow Simulation ◽  
Incompressible Fluid Flow ◽  
Boltzmann Method

A New Pressure Boundary Condition of Lattice Boltzmann Method (LBM) for Fully Developed Pressure-Driven Periodic Incompressible Fluid Flow

2008 ◽  
Author(s):  
Quan Liao ◽  
Tien-Chien Jen
Keyword(s):  
Fluid Flow ◽  
Incompressible Fluid ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Incompressible Fluid Flow ◽  
Flow Disturbances ◽  
Boundary Treatment ◽  
Developed Pressure ◽  
Boltzmann Method ◽  
Pressure Driven

In this paper, a new pressure boundary treatment of lattice Boltzmann method (LBM) for fully developed pressure-driven periodic incompressible fluid flow is proposed. The pressure gradient, instead of equivalent body force, has been applied to determine the particle distribution function on the periodic traverse sections for the fully developed pressure-driven periodic flow. Numerical simulations, including 2D pressure-driven Poiseuille flow and fluid flow passing square obstacles, are carried out using this new boundary treatment. Simulation results show that the proposed approach not only overcomes the nonphysical inlet and outlet flow disturbances (which the LBM simulation always suffers from using the existing pressure boundary methods), but also preserves the system periodicity and generates consistent pressure distribution with macroscopic periodic boundary conditions for the pressure-driven incompressible fluid flow.

scholarly journals Fluid flow simulation on the Cell Broadband Engine using the lattice Boltzmann method

2009 ◽  
Vol 58 (5) ◽  
pp. 1062-1070 ◽  
Author(s):  
Markus Stürmer ◽  
Jan Götz ◽  
Gregor Richter ◽  
Arnd Dörfler ◽  
Ulrich Rüde
Keyword(s):  
Fluid Flow ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Flow Simulation ◽  
Cell Broadband Engine ◽  
Boltzmann Method

Lattice Boltzmann simulation of 3D natural convection in a cuboid filled with KKL-model predicted nanofluid using Dual-MRT model

2019 ◽  
Vol 29 (1) ◽  
pp. 365-387 ◽  
Author(s):  
Alireza Rahimi ◽  
Abbas Kasaeipoor ◽  
Emad Hasani Malekshah ◽  
Mohammad Mehdi Rashidi ◽  
Abimanyu Purusothaman
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Natural Convection ◽  
Lattice Boltzmann Method ◽  
Entropy Generation ◽  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Local Heat Transfer ◽  
Content Type ◽  
Boltzmann Method

Purpose This study aims to investigate the three-dimensional natural convection and entropy generation in a cuboid enclosure filled with CuO-water nanofluid. Design/methodology/approach The lattice Boltzmann method is used to solve the problem numerically. Two different multiple relaxation time (MRT) models are used to solve the problem. The D3Q7–MRT model is used to solve the temperature field, and the D3Q19 is used to solve the fluid flow of natural convection within the enclosure. Findings The influences of different Rayleigh numbers (103 < Ra < 106) and solid volume fractions (0 < f < 0.04) on the fluid flow, heat transfer, total entropy generation, local heat transfer irreversibility and local fluid friction irreversibility are presented comprehensively. To predict thermo–physical properties, dynamic viscosity and thermal conductivity, of CuO–water nanofluid, the Koo–Kleinstreuer–Li (KKL) model is applied to consider the effect of Brownian motion on nanofluid properties. Originality/value The originality of this work is to analyze the three-dimensional natural convection and entropy generation using a new numerical approach of dual-MRT-based lattice Boltzmann method.

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