Grid refinement for entropic lattice Boltzmann models

B. Dorschner, N. Frapolli, S. S. Chikatamarla, and I. V. Karlin
Phys. Rev. E 94, 053311 – Published 28 November 2016

Abstract

We propose a multidomain grid refinement technique with extensions to entropic incompressible, thermal, and compressible lattice Boltzmann models. Its validity and accuracy are assessed by comparison to available direct numerical simulation and experiment for the simulation of isothermal, thermal, and viscous supersonic flow. In particular, we investigate the advantages of grid refinement for the setups of turbulent channel flow, flow past a sphere, Rayleigh-Bénard convection, as well as the supersonic flow around an airfoil. Special attention is paid to analyzing the adaptive features of entropic lattice Boltzmann models for multigrid simulations.

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  • Received 24 August 2016

DOI:https://doi.org/10.1103/PhysRevE.94.053311

©2016 American Physical Society

Physics Subject Headings (PhySH)

Fluid Dynamics

Authors & Affiliations

B. Dorschner*, N. Frapolli, S. S. Chikatamarla, and I. V. Karlin§

  • Aerothermochemistry and Combustion Systems Lab, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland

  • *benedikt.dorschner@lav.mavt.ethz.ch
  • frapolli@lav.mavt.ethz.ch
  • chikatamarla@lav.mavt.ethz.ch
  • §Corresponding author: karlin@lav.mavt.ethz.ch

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Issue

Vol. 94, Iss. 5 — November 2016

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