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Lattice Boltzmann Simulation of Two- and Three-Dimensional Incompressible Thermal Flows

机译:二维和三维不可压缩热流的格子Boltzmann模拟

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摘要

This work is concerned with the application of the thermal lattice Boltzmann method (TLBM) to compute incompressible two- and three-dimensional flows in cavities. Two convection test cases, namely, the laminar flow in a differentially heated square cavity and a cubic cavity, are numerically analyzed through TLBM. The internal energy density distribution function approach with two three-dimensional particle velocity models, namely, the 15-velocity and the 19-velocity, and a two-dimensional model, namely, the nine-velocity, have been used in the present work. Computations are carried out for laminar flows in a differentially heated square cavity and a cubical cavity (Rayleigh numbers = 10~3 to 10~5). The boundary conditions used are stable and of good accuracy. To lend credibility to the thermal lattice Boltzmann model square cavity results, they are further compared with those obtained from a finite-difference-based code developed for this purpose.
机译:这项工作与热晶格玻尔兹曼方法(TLBM)在计算腔中不可压缩的二维和三维流动方面的应用有关。通过TLBM数值分析了两个对流测试案例,即在差热方腔和立方腔中的层流。内部能量密度分布函数方法具有两个三维粒子速度模型(即15速度和19速度)以及二维模型(即九速度),已在本工作中使用。在差温加热的方腔和立方腔(瑞利数= 10〜3至10〜5)中对层流进行计算。所使用的边界条件是稳定的并且具有良好的精度。为了使热晶格Boltzmann模型方腔结果可信,将其与从为此目的开发的基于有限差分的代码获得的结果进行了进一步比较。

著录项

  • 来源
    《Heat Transfer Engineering》 |2014年第15期|1320-1333|共14页
  • 作者单位

    School of Mechanical Engineering, Noorul Islam University, Kanyakumari, Tamilnadu - 629180, India;

    Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Assam, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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