Abstract
We present a boundary condition scheme for the lattice Boltzmann method that has significantly improved stability for modeling turbulent flows while maintaining excellent parallel scalability. Simulations of a three-dimensional lid-driven cavity flow are found to be stable up to the unprecedented Reynolds number Re=5×104 for this setup. Excellent agreement with energy balance equations, computational and experimental results are shown. We quantify rises in the production of turbulence and turbulent drag, and determine peak locations of turbulent production.
| Original language | English |
|---|---|
| Article number | 043302 |
| Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
| Volume | 98 |
| Issue number | 4 |
| DOIs | |
| State | Published - Oct 4 2018 |
| Externally published | Yes |
Funding
Authors thank Cindy Ouyang for helping to write the parallelized version of the code and Gregory Herschlag and Ismael Perez for fruitful discussions. We also thank Volker W. Blum and Erik W. Draeger for a careful reading of the manuscript and insightful suggestions. Research reported in this publication was supported by the Office of the Director, National Institutes of Health of the National Institutes of Health, under Award No. DP5OD019876. This work is also supported by NIH Grant No. T32-EB001040. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Computing support for this work came from the Lawrence Livermore National Laboratory (LLNL) Institutional Computing Grand Challenge program.