Lattice Boltzmann method for fluid–structure interaction in compressible flow
نویسندگان
چکیده
We present a two-way coupled fluid–structure interaction scheme for rigid bodies using two-population lattice Boltzmann formulation compressible flows. An arbitrary Lagrangian–Eulerian of the discrete equation on body-fitted meshes is used in combination with polynomial blending functions. The function approach localizes mesh deformation and allows treating multiple moving minimal computational overhead. validate model several test cases vortex induced vibrations single tandem cylinders show that it can accurately describe dynamic behavior these systems. Finally, regime, we demonstrate proposed captures complex phenomena such as transonic flutter over an airfoil.
منابع مشابه
Compressible Lattice Boltzmann Method and Applications
Lattice Boltzmann Method (LBM) is a novel numerical method for flows simulations. Compared with classic methods of Finite Difference Method, Finite Volume Method and Finite Element Method, LBM has numerous advantages, including inherent parallelization and simplicity of boundary condition treatment. The LBM usually has a constraint of incompressible fluid (Mach number less than 0.4). A variant ...
متن کاملLattice and discrete Boltzmann equations for fully compressible flow
Equilibria for the common two-dimensional, nine-velocity (D2Q9) lattice Boltzmann equation are not uniquely determined by the Navier–Stokes equations. An otherwise undetermined function must be chosen to suppress grid-scale instabilities. By contrast, the Navier–Stokes–Fourier equations with heat conduction determine unique equilibria for a one-dimensional, five-velocity (D1Q5) model on an inte...
متن کاملFinite Difference Lattice Boltzmann Method for Compressible Thermal Fluids
A finite difference lattice Boltzmann method based on the Bhatnagar–Gross–Krook-type modeled Boltzmann equation is proposed. Themethod relies on a different lattice equilibriumparticle distribution function and the use of a splitting method to solve the modeled lattice Boltzmann equation. The splitting technique permits the boundary conditions for the lattice Boltzmann equation to be set as con...
متن کاملModified lattice Boltzmann method for compressible fluid simulations.
A modified lattice Boltzmann algorithm is shown to have much better stability to growing temperature perturbations, when compared with the standard lattice Boltzmann algorithm. The damping rates of long-wavelength waves, which determine stability, are derived using a collisional equilibrium distribution function which has the property that the Euler equations are obtained exactly in the limit o...
متن کاملThe Lattice Boltzmann Equation Method for the Simulation of Compressible Fluid Flow
We systematically derived hydrodynamic equations and transport coe cients for a class of multi-speed lattice Boltzmann models in D dimensions, using the multi-scale technique. The constitutive relation of physical uid is recovered by a modi ed equilibrium distribution in Maxwell-Boltzmann type. With the use of the rest particles and the particle reservoir, we were able to add one degree of free...
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: Physics of Fluids
سال: 2021
ISSN: ['1527-2435', '1089-7666', '1070-6631']
DOI: https://doi.org/10.1063/5.0062117