Lattice-Boltzmann-based large-eddy simulation of high-rise building aerodynamics with inlet turbulence reconstruction

A large eddy lattice Boltzmann simulation of magnetohydrodynamic turbulence

Large eddy simulations (LES) of a lattice Boltzmann magnetohydrodynamic (LB-MHD) model are performed for the unstable magnetized Kelvin-Helmholtz jet instability. This algorithm is an extension of Ansumali et al. [1] to MHD in which one performs first an expansion in the filter width on the kinetic equations followed by the usual low Knudsen number expansion. These two perturbation operations d...

Direct Building Energy Simulation Based on Large Eddy Techniques and Lattice Boltzmann Methods

The modeling of convective flows with 3D lattice Boltzmann fluid dynamics is presented using a lattice BGK approach for low Mach number flows with variable density combined with a large eddy turbulence model. The ability to resolve non− Boussinesq density varying problems is depicted for two dimensional Rayleigh−Bénard−convection at a Rayleigh number Ra = 800,000. A complex three−dimensional ex...

High-Order Implicit Large-Eddy Simulation for Transitional Aerodynamics Flows

This thesis presents a high-order Implicit Large-Eddy Simulation (ILES) approach for simulating transitional aerodynamic flows. The approach consists of a hybridized Discontinuous Galerkin (DG) method for the discretization of the Navier-Stokes (NS) equations and a parallel preconditioned Newton-GMRES solver for the resulting nonlinear system of equations. The combination of hybridized DG metho...

Entropic Lattice Boltzmann Method for Large Scale Turbulence Simulation

Recently, a minimal kinetic model for fluid flow, known as entropic lattice Boltzmann method, has been proposed for the simulation of isothermal hydrodynamic flows. At variance with previous Lattice Boltzmann methods, the entropic version permits to describe the non-linear dynamics of short scales in a controlled and stable way. In this paper, we provide the first numerical evidence that the en...

Large Eddy Simulation: Turbulence Project