High-Reynolds-number turbulent cavity flow using the lattice Boltzmann method

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 threedimensional 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.