An Implicit Block LU-SGS Algorithm-Based Lattice Boltzmann Flux Solver for Simulation of Hypersonic Flows
نویسندگان
چکیده
منابع مشابه
From Lattice Boltzmann Method to Lattice Boltzmann Flux Solver
Based on the lattice Boltzmann method (LBM), the lattice Boltzmann flux solver (LBFS), which combines the advantages of conventional Navier–Stokes solvers and lattice Boltzmann solvers, was proposed recently. Specifically, LBFS applies the finite volume method to solve the macroscopic governing equations which provide solutions for macroscopic flow variables at cell centers. In the meantime, nu...
متن کاملA Block Lu-sgs Implicit Dual Time-stepping Algorithm for Hybrid Dynamic Meshes
A block lower-upper symmetric Gauss-Seidel (BLU-SGS) implicit dual time-stepping method is developed for moving body problems with hybrid dynamic grids. To simulate flows over complex configurations, a hybrid grid method is adopted in this paper. Body-fitted quadrilateral (quad) grids are generated first near solid bodies. An adaptive Cartesian mesh is then generated to cover the entire computa...
متن کاملAn Efficient Implementation of Implicit Operator for Block Lu-sgs Method
An efficient implementation technique of a block matrix implicit operator based on van Leer’s FVS scheme is proposed for the LU-SGS method on unstructured meshes. The off-diagonal terms of the linear system of equations were approximated by the increment of the numerical flux using the point-by-point splitting feature of FVS schemes. The present improved LU-SGS method provides better performanc...
متن کاملA Lattice-Boltzmann solver for 3D fluid simulation on GPU
A three-dimensional Lattice-Boltzmann fluid model with nineteen discrete velocities was implemented using NVIDIA Graphic Processing Unit (GPU) programing language ‘‘Compute Unified Device Architecture’’ (CUDA). Previous LBM GPU implementations required two steps to maximize memory bandwidth due to memory access restrictions of earlier versions of CUDA toolkit and hardware capabilities. In this ...
متن کاملLattice Boltzmann method for direct numerical simulation of turbulent flows
We present three-dimensional direct numerical simulations (DNS) of the Kida vortex flow, a prototypical turbulent flow, using a novel high-order lattice Boltzmann (LB) model. Extensive comparisons of various global and local statistical quantities obtained with an incompressible-flow spectral element solver are reported. It is demonstrated that the LB method is a promising alternative for DNS a...
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: Advances in Applied Mathematics and Mechanics
سال: 2019
ISSN: 2070-0733,2075-1354
DOI: 10.4208/aamm.oa-2018-0167