Thermal, Microchannel, and Immersed Boundary Extension Validation for the Lattice-Boltzmann Method: Report 2 in Discrete Nano Scale Mechanics and Simulations Series

Abstract

The Lattice Boltzmann Method continues to garner interest in fluids research, particularly with its ability to accurately simulate laminar flows in the incompressible region. This interest can be attributed in part to the ease of implementation the Lattice Boltzmann Method provides; including a lack of complex differential terms and a linear approximation of the collision operator contained in the Boltzmann equation. In this work, the traditional Lattice Boltzmann solver is augmented with support for immersed boundaries, thermal flows, and microchannel flows. Thermal and micro-enabling support is demonstrated and validated through Rayleigh convection in a square channel and thermally coupled Poiseuille flow through a microchannel, respectively.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2017
Accession Number
AD1038169

Entities

People

  • Jeffrey B. Allen
  • William P. England

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Collisions
  • Computational Fluid Dynamics
  • Convection
  • Equations
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Incompressible Flow
  • Knudsen Number
  • Laminar Flow
  • Mechanics
  • Monte Carlo Method
  • Physics
  • Poiseuille Flow
  • Pressure Distribution
  • Simulations

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.