Lattice Boltzmann Thermal Flow Simulation and Measurements of a Modified SAE Model With Heated Plug

2006 ◽  
Author(s):  
Ehab Fares ◽  
Sacha Jelic ◽  
Timo Kuthada ◽  
David Schro¨ck
Keyword(s):  
Lattice Boltzmann ◽  
Flow Simulation ◽  
Lattice Boltzmann Model ◽  
The Novel ◽  
Predictive Capability ◽  
Road Vehicles ◽  
Wall Model ◽  
New Developments ◽  
Experimental Findings ◽  
Boltzmann Model

This article presents the novel experiment of the modified SAE model with a heated plug and discusses the details about the new developments of the numerical model of the PowerFLOW 4.0 version, which employs a Lattice Boltzmann model and incorporates an improved unsteady two equations RNG k-ε turbulence model, a coupled PDE for the energy equation and an advanced wall model for both flow and thermal boundary layers. The hot flow is discussed both experimentally and numerically. Distributions of the flow field are compared with available experimental findings. The predictive capability and the feasibility of the current Lattice Boltzmann approach is demonstrated and the applicability to similar flows over realistic road vehicles is discussed.

Simulation of Flow in Multi-Scale Porous Media Using the Lattice Boltzmann Method on Quadtree Grids

2016 ◽  
Vol 19 (4) ◽  
pp. 998-1014 ◽  
Author(s):  
Lei Zhang ◽  
Qinjun Kang ◽  
Li Chen ◽  
Jun Yao
Keyword(s):  
Porous Media ◽  
Lattice Boltzmann ◽  
Voronoi Tessellation ◽  
Flow Simulation ◽  
Lattice Boltzmann Model ◽  
Flow In Porous Media ◽  
Multi Scale ◽  
Multiple Length Scales ◽  
Boltzmann Method ◽  
Boltzmann Model

AbstractThe unified lattice Boltzmann model is extended to the quadtree grids for simulation of fluid flow through porous media. The unified lattice Boltzmann model is capable of simulating flow in porous media at various scales or in systems where multiple length scales coexist. The quadtree grid is able to provide a high-resolution approximation to complex geometries, with great flexibility to control local grid density. The combination of the unified lattice Boltzmann model and the quadtree grids results in an efficient numerical model for calculating permeability of multi-scale porous media. The model is used for permeability calculation for three systems, including a fractured system used in a previous study, a Voronoi tessellation system, and a computationally-generated pore structure of fractured shale. The results are compared with those obtained using the conventional lattice Boltzmann model or the unified lattice Boltzmann model on rectangular or uniform square grid. It is shown that the proposed model is an accurate and efficient tool for flow simulation in multi-scale porous media. In addition, for the fractured shale, the contribution of flow in matrix and fractures to the overall permeability of the fractured shale is studied systematically.

scholarly journals Droplet Collision Simulation by a Multi-Speed Lattice Boltzmann Method

2011 ◽  
Vol 9 (5) ◽  
pp. 1219-1234 ◽  
Author(s):  
Daniel Lycett-Brown ◽  
Ilya Karlin ◽  
Kai H. Luo
Keyword(s):  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Two Dimensional ◽  
Droplet Collision ◽  
Droplet Collisions ◽  
Dimensional Simulation ◽  
Experimental Findings ◽  
Boltzmann Method ◽  
Boltzmann Model ◽  
Good Agreement

AbstractRealization of the Shan-Chen multiphase flow lattice Boltzmann model is considered in the framework of the higher-order Galilean invariant lattices. The present multiphase lattice Boltzmann model is used in two-dimensional simulation of droplet collisions at high Weber numbers. Results are found to be in a good agreement with experimental findings.

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