Hermite regularization of the lattice Boltzmann method for open source computational aeroacoustics
نویسندگان
چکیده
منابع مشابه
Comparison between lattice Boltzmann method and Navier-Stokes high order schemes for computational aeroacoustics
Computational aeroacoustic (CAA) simulation requires accurate schemes to capture the dynamics of acoustic fluctuations, which are weak compared with aerodynamic ones. In this paper, two kinds of schemes are studied and compared: the classical approach based on high order schemes for Navier–Stokes-like equations and the lattice Boltzmann method. The reference macroscopic equations are the 3D iso...
متن کاملOne-Step Aeroacoustics Simulation Using Lattice Boltzmann Method
The lattice Boltzmann method (LBM) is a numerical simplification of the Boltzmann equation of the kinetic theory of gases that describes fluid motions by tracking the evolution of the particle velocity distribution function based on linear streaming with nonlinear collision. If the Bhatnagar–Gross–Krook (BGK) collision model is invoked, the velocity distribution function in this mesoscopic desc...
متن کاملA novel boundary condition for the simulation of the submerged bodies using lattice boltzmann method
In this study, we proposed a novel scheme for the implementation of the no-slip boundary condition in thelattice Boltzmann method (LBM) . In detail , we have substituted the classical bounce-back idea by the direct immersed boundary specification . In this way we construct the equilibrium density functions in such a way that it feels the no-slip boundaries . Therefore , in fact a kind of equili...
متن کاملPropagation Speed, Internal Energy, and Direct Aeroacoustics Simulation Using Lattice Boltzmann Method
The validity of the lattice Boltzmannmethod for direct aeroacoustics simulations depends on its ability to correctly recover the equation of state of the gas and its dynamic viscosity.This paperpresents a latticeBoltzmannmethodwith two relaxation times to carry out the direct aeroacoustics simulations of a two-dimensional Gaussian sound pulse in a uniform flow over a range ofMach numbers (M) va...
متن کاملHydrodynamic investigation of multiple rising bubbles using lattice Boltzmann method
Hydrodynamics of multiple rising bubbles as a fundamental two-phase phenomenon is studied numerically by lattice Boltzmann method and using Lee two-phase model. Lee model based on Cahn-Hilliard diffuse interface approach uses potential form of intermolecular forces and isotropic finite difference discretization. This approach is able to avoid parasitic currents and leads to a stable procedure t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2017
ISSN: 0001-4966
DOI: 10.1121/1.5006900